[Borodog]

Without read, I simply call down. I think simplest is best in this situation. You are likely beat, because the King on the board has "pre-flop raiser" written all over it, but against an unknown at $2-$4, I am big on call-downs with TPTK. Doubly so at a table I just sat down at, for meta-game reasons (as I've mentioned in a couple other threads today). You might be ahead of a tard, you might have hidden outs against a hand like 54s, and it's good to be seen calling down with TPTK. It discourages pot shots at you in later hands by any observant player whether they're in the hand or not.

Just get to showdown as cheap as you can, learn what you can learn, and move on to the next hand.