Turn: Check, check, check.

River: 2h, I bet $20 ($25 pot), BB pushes, CO folds, I call ($10 more), BB has K4s.

CO said he had an OESD, which I completely believe. I definitely agree that I should have 3-bet the flop, especially considering that a slowplay decreases the chances that a drawing hand (who's drawing dead anyway) comes along for the ride if I wait.

Is a push here not a huge overbet? After calling the $7 ($25 pot) I had $99 behind, and CO had me covered; unless it's my lucky day and they're both coming along with trip 4's, I think someone's folding. Actually, I guess it depends on who has a 4 - CO probably calls with a four, but is probably folding a higher PP or draw. BB calls most anything that he would CR the flop with, since he only had $30 left.

Thanks for the comments, I appreciate the help.