Definitions by dafdeg
m.u.f.f.
M.U.F.F. - mandatory ugly friend. A hot girl who has a ugly usually large nosed vengeful aquaintance who no guy wants to touch.
If the girl is ugly enough the wingman won't even touch her. Then the cockblocking comes in.
If the girl is ugly enough the wingman won't even touch her. Then the cockblocking comes in.