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Ass cleavage hanging out the bottom of a girl's shorts.
"Check out that Slutter Butter, man!"
by Sly Foxx June 23, 2013
The act of being a giant slut/whore.
Also, a term of endearment.
OMG! Did you see Dan with that girl last night? She was SUCH a slutterbutter.

Girl to her friend: "Love you slutterbutter." <3
by HRA623 May 17, 2011
Tanning lotion for Jersey Shore type females.
Man Snookie looks so dark! She still should have used way more Slutter Butter!
by JMac303 June 12, 2010