Very rational. And the play isn't Bad -- not at all. Based on your description of the other guy's play caution might be appropriate.

But another way to think is:
-There are people in here with overcards only. It's time for them to go. Then the king isn't scary and you can rep it at the people who are drawing. Safe rep b/c you do in fact have something almost as good as what you're repping.

Is the jackass DPS? This is just the thing to sting him with -- he's betting TP crappy kicker into a field of 4, then second best pair into a field of 3.

What's with that turn bet? He has to see the draws out there but he's giving them 6 to 1 anyway. Why? He wants information. He wants someone to tell him "your 7 is no good here" then he can fold in good conscience.