One night at Ameristar here in Kansas City I got beat by quads twice at the same table and BOTH times I flopped a boat (in a cash game). The first hand I remember very well... I had QQ and flop came QKK. The river brought a K giving the guy quads. I re-bought and later in the night a very similar hand happened again where another guy flopped a set, I flopped a boat and he got the quad either on the turn or river (my mind won't let me remember the details for that hand). That was not a good night for me in my poker career...