I'll go with Willie and the Krispy Kreme Angle...my guess is he threw a clot that temporarily lodged in his carotid...this was brought on by the 3 (three) Wendy's Big Bacon Classics he scarfed down when he got da' munchies 2 hours prior, and sent Cytherea on a Corporate Death Burger Quest dressed in her Strawberry Shortcake Smock out to the Wendy's 2 miles away that was still open late...

Either that or he slipped on Pee Puddles in his kitchen.