Sneaking up behind a person when they crouch to tie their shoelaces and tipping them onto the ground.
"Hey, Josh! Want to come raiding with me this weekend?"
"You what? I've matured past such juvenile pursuits. Besides, I'm playing Skyrim all weekend."
10π 16π
When someone walks up to you pretending to be a friend and knees you in the groin as hard as they can.
"Can you believe Alison? She gave me the worst smiley today. I'm still walking funny."
"Don't be silly. That was just a little love tap."
When you're having vaginal sex with a woman while submerged (partially or completely), in a body of water and air bubbles are squeezed out of her nether regions.
*frenetic splashing sounds* "Hey! Air bubbles?!? That was a quoop. You quooped!"
The sound made from wet love-making.
*Moist squelching sounds*
"Mmm, yeah, you like me shucking you, don't you, baby?"
"God, yes! Don't stop, don't stop, don't stoppppppppp! Mmmhmmmmhmmmm..."
When you're masturwaiting and you unconsciously play with your pubes to the point that they are removed, generally only in a certain area.
"Ooh, I like the scenery tonight, baby. Have you been manscaping exotically for me?"
"Just a bit of deforestation, love. I know how you enjoy things kinky."
2π 1π
When a program is so simple that it baffles adults, yet children work out the functions immediately.
"Is this new phone adult proof or something? I can't work it out but my six year old can."
Someone who refers more frequently to Urban Dictionary than to the Standard Oxford Dictionary for their definitions.
"Stop being an Urbanite Dick! That word means something far less inappropriate!"