asslusion 

An illusion of ass. When a girl's clothing makes it appear like she has a nice ass, but in reality there is nothing there.

also applicable to men

"Damn that girl got a fine booty!"
"Nah man, she flat. Them jeans just be givin her an asslusion."

asslusion by LewDaMan October 9, 2016

Optical Asslusion

When ones gluteus maximus appears to be rotund but when a closer look is taken, it is actually taking the affect of an ass but no ass is found until further investigation is taken and the ass begins much lower.

The "Optical Asslusion" Looks good from far, far from good.

Optical Asslusion by WAAAAAAAAAAAALT April 21, 2008

assplosion 

The condition of the urgent need of a toilet because of upcoming mass defecation. The large intestine usually builds in gas pressure repeatedly, then fortunately subsides as you drive around looking for the best fast food restaurant to rush the restroom. As you park, the inevitable last build throws you from the car, you burst into a stall, and you barely drop your pants in time before the assplosion occurs. If your ass does not create a seal with the seat, the assplosion produces colorful feces all around the stall including walls, toilet, floor, and sometimes ceiling. Strangely, the toilet paper is untouched so you are able to make a clean getaway and vow never to return to that establishment. It makes for a good story every time you pass another similar restaurant.

We can't go to that Wendey's again because of the assplosion of 2011.

assplosion by urbanparker May 4, 2015

Halifax Assplosion

After a night of binge drinking at the Lower Deck, dip your bird in donair sauce, place pita bread on either side of partner's arse and then give 'er!!

Buddy gave me right some Halifax Assplosion last night.

Halifax Assplosion by quigley dawn June 28, 2010

Nuclear Assplosion

When you shit so hard it explodes out, can be shown by many small particles of shit ALL over the toilet bowl

Bob: Jim look at that toilet. Someone mustve had a nuclear assplosion in here!
**Jim looks at toilet**
Jim: HOLY FUCK

Nuclear Assplosion by dboyfromdahood April 16, 2012

Assplosion Sundae 

An extremely cruel yet hilarious prank to play on somebody, where you give them a sundae and they have diarrhea so hard it almost breaks the toilet. The sundae is made like any other sundae, except it contains crushed up laxatives and crushed up stool softeners. Causing the "Victim" or "Target" to have very liquid, very forceful shits, causing them to (Sometimes) shit themselves.

Dude 1: Yo, I just gave Josh an Assplosion Sundae!
Dude 2: What's that?
Dude 1: Just watch.
Josh (Eating Sundae): Oh shit, I gotta shit HARD!! (Runs towards bathroom) Fuck! I can't hold it in! (Shit oozes out of bottom of pants)
Dude 2: Dude, that's evil, but I can't stop laughing!
Dude 1: Fuck yeah man!

Assplosion Sundae by AntHill206 November 19, 2011

roman candle assplosion 

When your diarrhea assplosion continues in several second intervals blasting the toilet bowl like multiple shotgun blasts.

"My stomach was so messed up I lit up the crapper all morning with a roman candle assplosion."

roman candle assplosion by Sasafras68 February 23, 2009