TPTK + donk = Puke?

[mythrilfox]

this hand is really shocking to me. i would like never call here since most 50/x's seem really loose-passive for the most part, and your description doesn't do anything to deter me from thinking that.

what exactly is everyone's reasoning for a call here? i'd expect to see t9 set overpair quite a bit, but i might have to reevaluate my thinking. just curious if theres any line of reasoning beyond "i've seen this situation come up enough to know a call is best here"