To have sexual intercourse.
I'd like to buckle down on her! I hear that Dolemite has been buckleing down on Queen Bee for years.
by Ryan Hebert July 22, 2006

A 'body flap buckling run' is when a greased up derby girl skates full speed into a man only wearing a sombrero, slaps his balls with a ping pong paddle, then lights his hair on fire.
by Dr_Cakes December 21, 2023

when you are making out with your boyfriend/girlfriend at the drive-in movie and it leads to "something" more.
Person from the backseat "Are you belt buckling up there?" (at the sound of a belt buckle being undone)
by chicnanana September 2, 2009

you pull your balls above your dick, so that way its sticking out of your pants. anytime a girl looks at it, you say "Hey, my eyes are up here y'know" like they've done to us
girl: *Looks down*
guy: "My eyes are up here"
girl: "but your ballsack is out"
guy: "so's the top of your boobs, and it's called a ballsack belt buckle"
guy: "My eyes are up here"
girl: "but your ballsack is out"
guy: "so's the top of your boobs, and it's called a ballsack belt buckle"
by teeheepeelee December 11, 2023

by landwhales March 25, 2021

The act of pulling ones scrotum ( ballsack) over the top of their buttoned jeans while wearing a belt. The ballsack should then cover up his, ( or now days, her) actual belt buckle revealing the stressed testicles. Then is common practice to show to your friends to make them laugh.
by KKALEB December 6, 2017
