Top Definition
While in the act of coitus the man pulls out prior to orgasm, pushes his partner onto her (or his) back and ejaculates profusely on their stomach or tummy. This act refers to the action of basting a turkey while roasting it. Also noteworthy for being a sexual act that reduces one's chances of conception. Tummy basting can also be shortened to TB as in "I am going to TB the sh*t out of you."
Perhaps the best part of Tummy Basting is that it requires only one person.
My favorite form of release is tummy basting.
by Tummy Baster June 12, 2009

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