Villians Call: Yay or Nay?

[Irish Cannon]

I was in the rebuy tournament (after rebuy period, almost on second break) on the button and picked up two sixes in an unnopened pot. I raised 3xBB and BB repopped to 7xBB. Since I'm such a pro, I knew this guy was just trying to make a play because I raised on the button; I pushed (over half his stack) and he snap-calls with Kc10c and flops a 10 and busted me. Blinds were 150/300 A:25. I had about 14k and he had around 22K at start of hand.