Cheeksneak 

When a girl is wearing a skirt or shorts that reveal the under-curve of her asscheek she is offering a cheeksneak.

When a girl moves or walks a certain way and her clothing accidentally reveals her ass; a sneak-peek at her cheek.

Similar to a nipslip only for asses.

"Those shorts give a nice cheeksneak on that girl."

"Cheeksneak is the new sideboob."

Cheeksneak by Freaky Steve June 8, 2009

one-cheek sneak

A type of fart that is done while sitting, the one-cheek sneak is done by leaning to the side to let the gas excape. Very handy when sitting on a smooth, hard surface while wearing shorts, to prevent "hovercraft" sounds.

To avoid disrupting the classroom, Johnny let out a one-cheek sneak, and nobody was the wiser.

one-cheek sneak by Turnspike February 11, 2003

back cheek sneak 

n - In a sport where a goalie is involved, such as hockey, foosball, or soccer, scoring a goal by banking the shot off the back of the goalie.

Mark: I can't believe that shit went in, he just threw it at the goalie on a hope and a prayer and it went in off his ass. What a tool.

John: no dude, it was planned... the only way to score from that angle is the back cheek sneak.

back cheek sneak by The Hag April 18, 2013

one cheek sneak 

the act of quietly squeezing out a fart when sitting down by leaning to the side slightly and raising one cheek.

My girlfriend always knows when I fart because even though I do the one cheek sneak, I always give it away with my farting facial expression. Not to mention that the room also smells like a fucking animal died in there!

one cheek sneak by the prophet March 26, 2003

one cheek sneak 

An attempt to pass wind without making noise when in a seated position by leaning to one side while tensing one butt-cheek.

I had to fart in court so I busted the one cheek sneak.

one cheek sneak by hoot rider January 5, 2010

Double-Cheek Sneak 

When both of a girls buttcheeks are hanging or "sneaking" out of her shorts.

In Florida, all of the common girls on the street have double-cheek sneaks.

Double-Cheek Sneak by salohcin August 30, 2013

Left Cheek Sneak 

To create a distraction with your hands on the right side, and discretely pass serious wind from the left side of your buttocks.

"an atrocious smell came from dave's left side while he was fixing his papers on the desk to his right, must have been a left cheek sneak"

Left Cheek Sneak by Eric Parma-John September 9, 2007