It happened to me just last night.

I was on the button and it was limped around. I decided to call the big blind. After I hit the call button I realized the guy before me had raised it to about 10X the blind ($1 in a $10 room) I had a 96s.

I flopped 2 pair and won the hand. He said "Why would you call with a 9 - 6?!?!?! Do you not know how to play this game?!?!?!" He was pretty mad.

I didn't help him feel any better. I think I said, "Are you mad cause I called or mad because I won?" It's hard not to get cocky when your mistake pays off.