Weak-Tight?

[Warder]

I don't understand why you would play 22 this fast on a 249 board when you're pretty sure the opponent has an overpair. What does that accomplish besides slowing the opponent down. Like I said I'm about 100% sure he doesn't have a bigger pair.
I think he raised the flop to test me (wasn't a very large raise) and then improved on the turn and now that I've showed weakness by calling his raise and checking the turn he's going to commit his stack. But then again maybe I've giving $50 NL players a little too much credit to make smart decisions