Top definition
(interj.) Euphemism for "what the fuck."

Also "what the fuddmucking fudd," or simply "fuddmuffins."
"What the fuddmuffins, Lucas! Don't do that shit." & "What the fuddmucking fudd, that girl's name is Rainbow!" & *rear-ends someone's car* "OH FUDDMUFFINS!"

WTFDMFN
by demmmmi June 05, 2014
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