Top definition
mental fapsex (-0.774)
noun: The act of fapping to a mental image; usually one's pictured self engaged in fantastical/twisted sex acts with one or more people in his life. Many prefer the mental fap over the standard porn fap.
guy 1: "Dude.......last night I had a great mental fap about a black midget in a diaper and Joan Rivers...."

guy2: "Nice... you got that dude"
by craundizzle August 30, 2006
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug