Thought I'd mention this just for the record (happened 3 weeks ago). 3 way in a SnG on the button, everyone hovering at the same chip stack, stacks approx 15 big blinds. I'm on the button with 55, raised 3.5x, small blind flat calls with deuces wired, big blind folds. Flop comes 2 2 (7-8?) rainbow. He checks his quads I bet about 2/3 the pot, he shoves, and after some deliberation, I reluctantly called. Turned a 5, and you guessed it, rivered a 5 for quads over quads. I figure the odds of that happening are pretty astronomical, so I decided to share. Wish I was playing 200 NL maxed out though, hah.