2) (adj) generally, the act of doing any activity hardcore, all out, and as fully as possible.
A: Balls deep in some slut's filth.
ex 2. We hit the bars balls deep last night- I feel shitty.
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
"Are you in to go to tijuana tonight? IM BALLS DEEP"