fumb ducker 

Dumb Fucker, switch the first word of each and you get Fumb Ducker. It's at least 75% more comical than calling someone a dumb fucker. You might get some wierd looks though, but only by people who are too dumb to know what you are saying.

Did you just tell Mr. Olympia that he looked queer? You fumb ducker.

fumb ducker by Joe W. Thomas October 23, 2006

fumbucker 

Someone who likes to fum bucks if you catch my drift.

George W Bush is a fumbucker.

fumbucker by Joe blo April 25, 2003

Fumducker 

A person who "jerks off" while looking at National Geografic.

Hey Grandma, Grandpa iz such a Fumducker.

Fumducker by shimp May 29, 2005