when to call a habitual pusher

[samoleus]

Opponent in question is donutboy. He absolutely cannot handle my style and hates me because of it. He sits down and my table and in the first two orbits, fires off all manner of profane tirades and tells me all kinds of things that I never knew about my mother and nonexistent sister.

Anyway, of the first ten non-blind hands that I play against him (he has immediate position on me), I raise seven of them to 56. Of those seven hands, he folds three of them and PUSHES for 2K in the other four! I fold to his reraise all four times.

I choose not to raise my raising standards (as if I do that, he is liable NOT to continue pushing with marginal hands). I feel like if I keep raising with my usual frequency, he will keep making this idiotic move and I will pick him off.

In the hand in question, it folds to me on the button. I raise to 56 with A-6 offsuit. He pushes (now the fifth time out of eight such raises that I have made). BB folds. Do I call or not?

Now when you answer, please remember that it is faulty logic to say that I should wait for a huge hand since he will surely do this at some point when I have AA or KK or whatever. This kind of thought process (passing up small edges for the guarantee of bigger ones later) may be sound in tournament play but is not accurate in cash game play. In a cash game (where one can reload), and as long as one is properly bankrolled for the game, one should never pass up a +EV situation for a zero EV situation (folding).

So with that in mind, should I call the 2K with my A-6 or not? Also, a couple follow up questions: what is the worst pocket pair and the worst unpaired hand that I should make the call in this situation with?

Cheers,
Samo