1 definition by Batmanxisxrad

STFFU

Shut the flying fuck up.
Similar to stfu but used for more random people.

Jakki: "So I heard this really funny joke yesterday! But... I forgot it. It was really good though."
Calvin: "Dude, stffu, why don't you stop eating so much sugar and go jump off your roof and try to fly"

by Batmanxisxrad October 15, 2008