A female who has a nice or unusually large ass.
Damn son yo shawty over dere got sum junk in da trunk!
by Big Willie November 28, 2003
Big booty usually a big one that is very "velupcuious"(not spelled right).ba dunka dunk
That way you shake that "junk in da trunk" it turns me out.
by MonkeyPimp March 18, 2006
referring to the amount of "material" in one's ass
Yo, da hoe gots a lotta junk in da trunk
by angel4325 September 04, 2004