1 definition by zoe, dipshit
A "slut butt" is a girl or boy that participates in slutty, yet childish and immature acts like: licking some guy's face that you just met, and/or grabbing a chick's boob making a cartoon honking noise while you have a girlfriend.
Dude, Maria was dancing with a random guy last night, and was all over him, with her boyfriend standing RIGHT there. . . She is such a slut butt.
by zoe, dipshit February 7, 2010