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When you get a huge raging boner of questionable persistence during while watching the Superbowl of the NFL, thus resulting in an entirely new type of boner... the SuperBowlner.
Guys sitting on a couch drinking beer while watching the SuperBowl, unsuspecting whats about to happen...

Guy 1: "Awesome my team just scored a touch..touchdown..ahhh whats happening!?"
Guy 2: "Looks like a case of Superbowlner."
Guy 1's pants explode and blacks out.
Guy 2 continues to drink beer and watch the game.
by NFL_SUPERSTAR69 October 20, 2009
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