Having a large and squarish head that resembles a mailbox. A lot of the times people with mailbox heads eat ass. occasionally they will have spiked or raised hair resembling the flag on a mailbox.
"Have you seen that dude grant? He got a Mailbox Head."
by DatManT January 16, 2017
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A superhero who's uncle was killed over the $20 in his nephew's birthday card by a mail thief.
Mailbox man-All the mail I save won't bring back Uncle Sammy, I know, I just miss him.
by Solid Mantis July 20, 2018
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Basketball for midgets since midgets can dunk on a mailbox.
Look, the two midgets are playing mailbox basketball over there!
by Solid Mantis July 20, 2018
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An awesome VODKA AND GOON combo! Favourite of cheap binge drinking teens.
Let's hang at NCC and have Sex on a Mailboxes and get stoned.

GOON FOR LIFE!!
by Bruce god4eva Campbell March 3, 2008
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One's ass when referred to as a recepticle
He left a special delivery in her chocolate mailbox.
by Ham Cannon November 7, 2003
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Indiana Mailxbox: When a foe takes a literal shit, inside one’s nostril.
Steven Hawkings: (In robot voice) Im going to Indiana Mailbox your mother.
Annr Frank: Don’t do me like that bruv, please no.
by DaddyDuerk February 14, 2019
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A person that lays around the house watching the mailbox for his government check.
by voiceofstl March 19, 2021
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