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RBI

Stands for Roast Beef Insertion. It indicates any type of penetration or sexual act.

Also: Baseball. Runs Batted In.
-Ayo, you see Trina?
-Did I see her? I musta got like 4 RBI last night!
by legab April 29, 2009
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RBI

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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RBI's

Reddit Bureau of Investigations are the biggest bullies and stalkers on TikTok.
The RBI's are the meanest and nastiest group on TikTok and Reddit.
by TIKtokLife2 June 5, 2023
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