when you yell out "THUMB OF DISCOMFORT" and swiftly lodge your thumb deep within another persons asshole and you suprise the hell out of them. If you miss and hit the cheek the person might thing your gay and not ghey
me: *sneaks up on someone* THUMB OF DISCOMFORT!
someone: huh??
me: *SHOVES*
someon: OMFG!
by onge November 1, 2004
Get the Thumb Of Discomfort mug.