[tit carwash]

The act of placing ones face in a woman's cleavage while the woman shimmies, jiggles or otherwise moves her bosom, or "tits", in a sweeping, back and forth, generally horizontal motion similar to a drive-thru carwash.

"Dude I can't believe you just payed two hundred bucks for 3 songs in the champagne room! Did she touch your penis?"
"No, but I did get a 25 minute tit carwash."