1 definition by Aidensgrand
The definition of a Fuckdude is somebody that is always screwing things up for you or a group of friends.
Person A: Hey man, do you have the tickets?
Person B: Oh no! I forgot them at the house!
Person A: Fuckdude!
Person B: Oh no! I forgot them at the house!
Person A: Fuckdude!
by Aidensgrand February 26, 2011