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1. Potty humor
Joke, or a humorous statement, relative to shit, defecation, urination or anything that relates to the toilet.
I was full of sh*t, but I just went to the toilet and took it all out - that's an example of a very poorly constructed potty humor joke.
2. empty netter
A humorous comment that occurs when somebody says something that lends itself to a great joke, as in an empty net goal in hockey. An empty netter is often a sex-related comment.
When my girlfriend said I never knew what would come out of her mouth, it was an empty netter for me to say that I know what goes into her mouth.
3. gaffewww
A statement that begins with a funny joke, but ends in a massive gross-out.
During the first part of that joke people were all "ahhhHAHAHA", but then when he mentioned drinking the urine, it al turned into a gaffewww.
4. Mormon Pranking
The act of pulling pranks using clever items such as toilet seats, toilet paper, sonic toys, window paint, and tampons/pads paired with witty puns to convey a certain feeling towards a certain surprised victim. Only friendly, unless anonymous.
Mormon Pranking:

Back for the summer: Toilet seat & Candy canes... "We're so glad you "cane" back, you're the life of the "potty""

After bad break-up/hook-up: styrofoam fish and a plastic diver... "Don't worry there's plenty of other fish in the sea to pass along your strep throat to."

Ex-boyfriend: small tighty whities... "You left these at my house, thought you'd want them back. Love, Snooki."
5. peepeepotty
usually a young woman that urinates in the drivers seat of her car because she is laughing too hard.
my friend told me a hilarious joke as i was pulling in my drive way and i became a peepeepotty.
6. Smurf Ball
The name given to the act of dropping a hard packed snowball into a port-o-potty or out-house through the outside vent while in use.

The resulting splash often creates smurf balls.
Dude I hate my co-workers. I went to take a dump and they smurf ball'd me.
7. kyle
Kyle Brovlofski, one of the four potty-mouthed kids (along with Stan, Kenny and Eric Cartman who are the main characters in the Comedy Central cartoon "South Park". Kyle is the good-hearted kid who always tries to do the right thing (just as Stan is the rational/practical one and Cartman is the racist a-hole), but usually wraps himself around the emotional axle trying to do it. Kyle is constantly tormented by Cartman for being Jewish. The second half of the "They killed Kenny" / "You bastards!" joke.
Stan: "Oh my God, they killed Kenny!"
Kyle: "You bastards!"
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