On two tables today I was either biggest stack or 2nd biggest stack, but ended up busting to one hand with the other big stack.

Blinds are 50/100
UTG 5000
HERO (MP) 4000
CO 2000
BTN 800
SB 1200
BB 1600

UTG raises to 400, I call with AKs.

Flop comes (pot about 900)
UTG pushes all-in for 4000+ and I call thinking he likely wouldn't do that with a set. He flips over QQ. F*CK!!

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Blinds are 150/300
UTG 4800
MP 2400
HERO (CO) 5100
BTN 2000
SB 1800
BB 1800

UTG (loose player) limps UTG. I raise to 900 with AA. Everyone except UTG folds.

Flop: (pot is about 2200)
UTG checks, I push (I'd be pot-commited to any smaller raise anyways). He has 22.