[Homer]

Worst case scenario as far as pot odds go is that you call the turn, EP folds, CO caps and you and button call. If this happens, you'll be getting 15:4 or 3.75:1 on the call. In practice, you might get better odds since EP may call and it may not be capped (if this happens you'll be getting 15:3 or 5:1 odds).

Assuming that someone already has a straight, you have 3 K outs to a chop (so essentially that's 1.5 outs) and maybe 8.5 flush outs to a win (if the Td is good half the time). So anyway, you have around 10 outs out of 46 unseen cards, so you're 3.6:1 against getting there on the river. Since at worst you'll be getting 3.75:1 on the call (and could be getting up to 5:1) and will have some additional help from implied odds when you get there, you have a call.

In practice, I would think "I have a big ass draw -- 12 outs if all are clean, which means I'm around 3:1 to get there. Even if EP folds and CO caps I'll be getting a good price, so I'm calling."

-- Homer