When a dude pulls down his pants and sits on a naked girl's chest. He then proceeds to wiggle his ass so that his nuts smack between her tits.

past tense: tat sat
Nick: Guess what happened last night?
Ben: What?
Nick: Shelly let me tit sit her.
Ben: WHAT?
Nick: That's right. I tat sat a bitch
by shandman300 May 5, 2011
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In a good or favorable position; taken care of, nothing to worry about.
“What’s up man? Just checking in to make sure you made it to the airport on time to catch your flight, everything all good? You sitting tits?”
All good, I’m sitting tits. I’m at the gate now about to board, got everything under control, thanks man!”
by Chocolate bardonkey June 1, 2019
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