1 definition by Dethbed666
A contraction. Created from the phrase, "Man, fuck....," where "fuck" is replaced with the "eff" sound when swearing is not appropriate. Pronounced "Maneff."
"This movie sucks. Manf this, I'm going home."
"Hey, Rhonda said you are stupid."
"Yea? Manf that bitch!"
"Hey, Rhonda said you are stupid."
"Yea? Manf that bitch!"
by Dethbed666 January 19, 2012