In the literal sense, this means to insert the penis in its entirety into a females vagina, leaving nothing but your balls outside of said vagina.
It can also be used to imply that the action or event was taken to its extreme, with no other possible courses of actions available.
Joe: "Dude I came back to my controller and you were balls deep up in my ass."
Me: "Ahahahahahaha!" *accidently walks off cliff on map Jungle in Black Ops
Person 1: "Dude, we're balls deep in the Middle East now that Obama's president."
Person 2: "Not as deep as I was in your mom last night."
Person 1: "WTF?!"
(verb) To go into the vagina completely..up to the balls
(adjective) All the way in...balls slapped up against the pussy
"Yo Pete...you get balls deep up in that Mandy Moore bitch yet? "
1) (adj) Specifically, the act of inserting the dick into an orifice up to the hilt, such that the balls rest against the orifice.
2) (adj) generally, the act of doing any activity hardcore, all out, and as fully as possible.
ex 1. Q: Where were you last night?
A: Balls deep in some slut's filth.
ex 2. We hit the bars balls deep last night- I feel shitty.
to insert your penis into the vagina (or other orafice) until your balls rest against the orafice.
I'm going to go balls deep.
When a male inserts his penis into a partner all the way to the testicles.
"It was great, I was balls deep in this chick."
"Shit dude, my moms walked in while I was balls deep."
A pork sword buried to the hilt; the maximum length which it is possible to slip someone; in a sausage and donut situation . The maximum extent to which the sausage can be hidden.
We were at it for hours i was balls deep all the way.
1.deep sexual penetration in which the balls are almost in too.
2.can be used as an expression for something overwhelming, ridiculous, exaggerated, or to refer to a large number of things. Also as an affirmative when answering a question
I'm balls deep with broads trying to get at me.
"Are you in to go to tijuana tonight? IM BALLS DEEP"
Full penetration on a pussy or asshole
Dude, I went balls deep on that chick's ass I met last night at Denny's