A colloquial phrase referring to the basics of a
job, task, or concept. Similar in use to "the nuts and bolts" or "the ins and outs". Interestingly, all
three of these phrases contain double entendres, but are intended for use in a generally
non-sexual manner.
Oh, you're new here? Let me show you the
balls and the butts of running the cash register.
Jesse, shut up. You really don'
t understand the
balls and the butts of comedy.