A foolish person who perpetrates a silly blunder (usually in the presence of several or many people), thereby prompting a repeating chant of "Spoonihan!" from those present, directed at *the* Spoonihan.
Mate did you hear that? The DJ just properly fluffed up that track! (all chant) "SPOONIHAN!...SPOONIHAN!...SPOONIHAN!"
by Victor Stone January 8, 2006