A phrase originating in northern MA which if used literally is to tell someone to tuck their penis into their pants. It is more commonly used to tell someone to cool down or to stop trying to get with a girl who is clearly not interested.
Person One (to a hot girl): "Hey, wanna come over to my place later?"
Person Two: "Yo dude, tuck it in."
by beekthafreek October 11, 2009
When your shirt is untucked you heard a fat Mexican man say “TUCK IT IN
by SkeetLord556 July 15, 2018
A tuck is a Detroit slang for hoes or one of your hoes
Quan: you wanna be one of my tucks/tuck?
Jenny:hell no
by @_.theylovekiana on ig January 16, 2022
to go to sleep.

to "tuck in" to bed
Well, it's getting late. I think I'm going to tuck in for the night.
by singxmex2xsleep June 11, 2009
the act of a man taking his penis and hiding it bewteen his thighs in order to create the illusion of female genitals
Oh, shit!I thought you were a chick, but you were just tucking!
by meowza May 2, 2005
the secure spot you keep your valuables in, the location of which is known only to you
Dino: ay how'd you hide that pound so quick when the cops pulled up?

Jamal: you already know it was in the tuck bro
by the cartographer September 8, 2019