macshaft

v. to bungle an otherwise straightforward task, to demonstrate incompetence.

"I was trying to parallel park the other day, but I machshafted it halfway through and ran over a parking meter."

macshaft by wiredroach March 24, 2005

manshaft 

A cock. A Penis. Or a Dick.

"Hold up Jeff, I gotta go knob my manshaft right quick."

manshaft by Matt December 6, 2004