The maximum capacity of bareback-anal-sex cum in the rectum before rupture. Note: 'BSL' not to be confused with 'Bachelor of Science in Law'
"quick! hand me a sandwich bag! i've reached my Bum Spurting Limit (BSL) "
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An acronym for the phrase, “B.utt S.ucking L.ips”
“Girl, I don’t know what you see in that Eric guy..”
“Shit, you kidding right? He got some major BSL I want all over this booty”
Back Seat Legend- They get down in the back seat
“Yea bro, you know she’s a BSL”
“Turned your ex into a BSL”