They don’t call Las Vegas “Sin City” for nothing. This place was made for rule-breaking, rowdiness, and all-around ridiculous behavior. Folks visit to overindulge and let loose... sometimes too loose. From risque bachelor parties to unplanned weddings, Vegas is a 24/7 party with plenty to see and do.

Barely a soul comes to Vegas and behaves themselves. Drinks are forever flowing, fattening food is plentiful, and the noise from the casinos never quiets down. The nightlife is booming and the fun lasts until the wee hours of the morning. By the next day, big buffet brunches are deliriously devoured and the day goes ‘round again.

“What happens in Vegas stays in Vegas” is a popular mantra, but when there’s photographic evidence of the incident, it's hard to deny wrongdoings. These 20 pics prove how Vegas brings out the worst in people, even if they’re having the time of their lives.

20 Badly-Dressed Bachelor Party

If these fellas think they’ve got style down pat, they’re clearly not subscribers to GQ. And if they did this as a joke, there’s a pretty good chance they’ll spend the evening alone. That said, dudes come to Vegas in packs to party. Perhaps this wardrobe was meant to be amusing, but once the adult beverage haze wears off, they’ll realize their fashion faux pas.

19 Random Fan Steps On Stage With Celine

Celine Dion is a diva, and her Vegas residency was a real hit. Fans from far and wide came to see the singer perform like the pro she is. Unfortunately, there’s always someone in the crowd to tries to test the artist’s limits. This woman stepped on stage hoping for a duet. Celine surely had security shove her back to her seat.

18 At Least She Chose The Right Restroom

When you gotta go, you gotta go. But getting there is half the battle. This babe is clearly bombed, and she passed out before she could pee. While the floor seems clean and comfy, her hotel room would be a far better spot to take a snooze.

17 Will This Marriage Last?

Vegas weddings are always interesting, especially when the two getting hitched hardly know one another. With “Elvis” as the officiant, these cheesy ceremonies are cute, but concerning. Far too many couples regret what they’ve done the next day. There should be a divorce court easily accessible on the strip.

16 Long Night

After gulping down imbibements aplenty free of charge while gambling, guys and gals don’t even realize how much they’ve consumed. Plus, they’ll hit up the clubs afterward, and down colorful drinks ‘til dawn. It’s no wonder a guest would go face down without a fight.

15 Even Minnie Can’t Make It

If an adorable iconic mouse character can’t even keep it together in Vegas, how are the rest of us supposed to stay in line? Poor Minnie is a mess, and passersby are shocked she’d be such a slob. Just when a trip to Disney was next on the bucket list, Minnie will clearly not be available.

14 Almost Made It

This guy was so close to calling it a night, but his efforts were just not energetic enough. He got to the hotel room but never made it inside. The cleaning crew simply worked around him, but he’ll personally need a long shower if he wants to stay in Vegas for a second day.

13 Gambling Really Got To Her

Who knew gambling was so exhausting? Sure, some people play for hours, but all the liveliness in the casino isn’t anything like a lullaby. This gal has plenty of chips on the table, so she better wake up and smell the coffee. She can’t sit there forever without placing a bet.

12 A Cotton Candy Burrito At Vegas’ Creamberry Is Sure To Get Someone Sick

There’s a spot in Vegas called Creamberry where visitors can indulge in over-the-top treats they’d never find anywhere else. This colorful cotton candy concoction is supposed to be a “burrito,” but instead of beef and beans, it’s all sugar. The bellyache begins after the first bite.

11 Let’s Hope It’s Not Permanent

This gal loves Vegas, but if she actually tattooed the sentiment on her back, she’ll be sad when she realizes how poorly it was done. Let’s hope this is just written in marker, so she can wash it off when she comes to her senses. Even a lower back tattoo would be classier.

10 Four-Bro Pileup

When all four friends can’t stand on their feet, it’s evidence that the night was full of far too much partying. These pals are in a pileup, and none of them seem to be able to help the other. Once the sun rises and these fellas wake up, they’ll be wishing they never had that last round.

9 That’s Not A Jacuzzi

This gal wants to get her feet wet, but the fountain in the lobby isn’t the place to do so. She could go to the hotel pool or find a Jacuzzi, but instead, she took a chance and people thought she was crazy. It’s a good thing her antics didn’t get her tossed from the hotel. A stern warning should whip her into shape.

8 Something Tells Us This Isn’t His Hotel Room

Just because this guy is in his bed doesn’t mean he’s in the right place. Seems like his pals played a prank on him and dragged his bed out into the casino in the middle of the night. When he wakes up, he’ll wonder where he is. He’ll either think it’s funny or be fuming.

7 Gramps And His Girls

This older man wanted to rest his eyes before getting back to the slots, but these three babes took the opportunity to take a pic while he wasn’t even aware of what was going on. Things like this always go on in Vegas, and these women surely shared the pic on social media. Gramps was none the wiser, unless, of course, he’s on IG.

6 Endless Overeating

There is no shortage of food in Vegas, and visitors are willing to shell out big bucks for elaborate buffets and fine dining. There’s no such thing as a “diet” while on vacation, and the celeb chefs in Vegas bank on the fact that folks come to overindulge.

5 Dressed For Date Night?

While some may think this fella is part of an all-male revue, chances are he’s just an average dude doing something shocking to get into the Vegas vibe. He and his colorful companion may just be going on a date, dressed (at least partially) to get others to notice.

4 Hoping For A Hangover

Bars never close down for the night in Vegas. The “adult” beverages are well-stocked so they’ll never run out, and partying patrons keep plunking down cash for another cocktail. With all the drinking people do in Vegas, it’s a surprise they leave with their livers intact.

3 New Meaning To “Sharing” A Mimosa

Mimosas are fun to sip on during brunch, but this giant one is no ordinary order. These gals are sharing, but even so, it’s far too much for them to drink before getting on with the rest of their day. Brunch will be a blur if they slurp that entire drink down.

2 Fun For Everyone

#Spankfest sounds like an unusual event, but this woman is ready to paddle whoever sets her off. This giant duck seems to be her buddy, but his bum will be sore if she whacks him on the backside. Whoever came up with this idea must’ve known it could only go down in Vegas.

1 Casino Couture

Everyone has their own sense of style, but this man is taking casino fashion to a whole new level. Perhaps his costume is a way to confuse the other players, helping him win hand after hand. A “poker face” is one thing, but a giant headpiece is a whole different ballgame.