griswald knot 

A large and complicated knot. Taken from National Lampoon's Christmas Vacation when the main character, Clark Griswald, passed off a string of lights in a basketball sized knot to his son. It's most commonly seen made of electrical cords from game consoles and computer systems.

Good luck getting that out. It's wrapped itself into a Griswald Knot.

griswald knot by shrkdrvr January 11, 2008