the name of an ancient god in norse mythology, meaning "Father of Awesome". Uncle Shaddy is said to have the ability to shoot spaghetti from his finger tips, piss pure alcohol and fart cheetoes. Today Uncle Shaddy is used as a term indicating, PARTY!
Dude! Let go Uncle Shaddy! I'll grab the beer you get the cheetoes.
by BlackParadox January 10, 2012