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1.
The act of clenching the female nipple between the male buttcheeks, tucking the penis down between the female cleavage and performing oral sex on the female while having sex with her cleavage. A cousin of the popular "69" position.
It was the weirdest thing! I walked in and saw Tommy and Regina having "nip/tuck sex". Then Tommy farted and got her off!
by PolishPenitration July 18, 2010