Top Definition
The act of sexual intercourse.
Most likely in an car.
Erik: Where were you last night kid, you missed an insane party?
Tony: O it don't matta I was bucklin' the seatbelt wit that girl from avalon.
Erik: Damn son, I'm impressed.
by Gill wizzle June 24, 2007
6 Words related to Bucklin' the Seatbelt

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