When a male (or female) aggressively rubs his or her genitals on the upper ribcage of a particularly flat-chested girl. It's basically a boobjob but without the boobs.
Sam had really small tits, so we did some chest fucking before sex.
by Bangry Bob January 1, 2016
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A thing two friends do when they meet each other by chance.
Seen Josh today we totally chest fucked man
by Admiral adonis December 16, 2015
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