Loads of times at 5NL villain is going to show up with a 5, JJ, or something like 99 and even AK here alot, as well as a 10 obviously. Chopper is right though, it isn't hard to figure out who stacks off light and who doesn't. My problem at the time was that the opponent was relatively unknown to me.

I still played it like a monkey but fortunately I don't make this kind of mistake too very often, at least not at 5 and 10NL. I just felt like there was a good chance he was FOS or very light and for whatever reason I was in no mood to fold my QQ.