Balls Deep reffers to having your penis as deep inside of something as possible.....all the way down to the balls. Balls deep can mean any number of places as well...mouth, ass, vagina.

Balls Deep is a term that was coined by my brother Dan and Im proud to say I use it atleast once a day
I was balls deep in your mom lastnight.

Man...That chick I met lastnight, I took her back to my place and went balls deep on that shit till the sun came up.
by BIGGDAD September 11, 2009
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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
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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
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1. Can mean anything other than something negative.
2. Used when trying to conqure silence.

1. "Dude, that party was balls deep."
2. *silence* "Balls deep?"
"Balls deep."
by SkankinSally November 24, 2005
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when you build a snow castle out of snow balls and then commense to smoke marijuana or some other substance inside said castle in order to "bake" it or fill it with smoke with the intention of getting higher.
yo nigga we goin balls deep all up in dis hurr snow castle ya mean?
by itsalwayssunnyinthesun January 09, 2011
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