Top Definition
Acronym that stands for motherfuckin' titty suckin' two balled bitch. Used during moments of anguish/disipointment to express disapproval or anger.
Person 1: Bro, I think we just ran out of gas

Person 2: MFTSTBB!
#mftstbb #motherfucker #mftsldsoarp #mfttabokitr #fuckin shit
by whowhat?923 February 02, 2011
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