the crease where the butt ends and looks like it tucks under. Only viewable on big booty chicks.
DAMN!!! Look at the butt tuck on that broad
by partyandbs March 8, 2007
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When one tucks their butt to hide their boner.
"Man, We can't hug right now. I just saw the hottest girl and now I'm butt-tucked"

"You couldn't even call that slow dancing... His pelvis was more forward than his shoulders. So freakin butt-tucked"
by KatoriByrd July 29, 2013
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