Does this classify as a bad beat?
 

I'm holding K-3

Board shows 3-9-K-K-2
After some aggressive betting by both of us, I put him on K with a high kicker.
I go all-in

My opponent calls.

He shows me K-9.

I felt like Mike McDermott in Rounders. A full house beat by another full house. What are the odds of that?

A bad beat is when a guy has no business in the hand and catches up to you, you were behind the whole way and caught a hand you couldn't get away from. Not to be harsh, but if you weren't in the blind you really had no business in the pot with a hand like that anyway.

A bad beat is when the statistical underdog, usually an underdog by a wide margin, gets very lucky and wins the hand. When you have a monster and someone else has a better monster and both of you caught the hand on the same card thats just bad luck for you.

you were behind the whole time in the hand, you really shouldnt be playing those cards anyway.