[Defendant]

Heres a situation for you guys:

NL Holdem

Blinds: 50-100
Your stack: 1200

Middle position, 1 limp in front of you (stacksize: 4000, fairly loose), AQo, raise to 300, all fold to limper, he calls

Flop: 983 rainbow

limper bets 100, you raise 500 on a bluff, limper goes all in.

Now, the pot contains 2150. The call to you at this point is 400, laying you
1-5 potodds. Hitting your draw is 6 outs = 1-8. So by pot odds you should fold here, but if you fold, youre crippled. You HAVE outs left, if you hit, youre back in business. Ergo, you are committed to make a call that by straight pot-odds you should not be making ==> you are pot committed.

Defendant


Edit: He had 77, ace hit on the river, got lucky, but I still believe it was the right call (now, the bluff on the flop is a different story, but the guy has laid down hands in that situation so /shrug)