2 definitions by NastyN8Dawg

RBI = Respectfully, boner inducing. The most polite way to compliment a person's hotness.
Hey Shani, and I say this with love, your mom is RBI. She's a fantastic MILF.
by NastyN8Dawg July 20, 2021
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Fucking a tubby girl's backfat while she brings her arms in and flexes her lats (AKA jetpack position).
Emma bragged to her classmates that Wyatt had a good time jetpacking her in a tree house last evening.
by NastyN8Dawg June 11, 2021
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