This was a quick game played in my club. I don't know if this is a opening trap, I just played.

don't eat pawns

nice!

What would have happened if Black played 12. ... Nxb3? Aren't you just losing then?

12 Nxb3 game over  !! lol

I also think 12 Nxb3 wins for black, but white's line has lots of "psychological viability". Being it a fast game I'd bet most people would have taken the queen. The 12th white move is really just a risky trap, but it worked greatly.

My opponent is very greedy so I thought I could trick him. I want to emphasize that this was just a fast game for fun, I play bad but not this bad :P

It's not a risky trap, it's just a losing move. After 12. ... Nxb3 white is dead lost and with no compensation.  If white had been clearly losing this might be considered a desperate ploy hoping the opponent is incredibly careless, which in this case he was. But it's not any sort of "trap."

it's good

nice game.