1. having sex; more specifically, in flagrante delicto
I walked in and caught him balls deep on the couch with some chica from the bar.
by Herb N. Dictionary October 20, 2002
A nickname for a woman is so loose from slutty fucking, every time a dude enters, his balls get sucked into the vagina.
Nikki: Dude I cant feel anything!

Desperate nerd with a tiny cock: I'm BALLSDEEP!!!!! If you can't feel this, I'm just gonna give up and go play Halo Reach!!!!!! Fuck sex!
by Angry Spartan kitty kitty lick November 12, 2010
While bowling, if you throw a gutter ball for your first throw, then throw a strike to pick up the spare on your second ball.
Fuck ya, I just went balls deep to pick up the spare!
To be really fucking high.
Carper i smoked so much weed tonight i was BALLS DEEP .
by from smokeing January 26, 2009
to insert penis till balls slap vag.
tyler was balls deep in that tranny till he busted a nut she then kicked the fuck out of him till he was a bloody mess. tyler then the next day killed his dog and cut off his penis
by Mr. Mayonasse August 16, 2007
he stuck his whole package in, including his lovenuts
so i was balls deep in this guys asshole one time...
by Lindsey Heath & Shannon Olivier August 06, 2006
sinking two balls into the same cup while playing beer pong. making the incredible shot will reward you with three cups being removed and both balls back to shoot again.
in the championship beer pong game, team ramrod went balls deep on team whatever for the win!

by jereem k. May 06, 2007

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