I don't think i would fold.. I mean 99 fits pretty well there, but thats about it, 8 9 still surely doesnt play that way, i cant really put A 9 in his range unless it was clubs... then maybe. I know its only calling for a chop, but I don't think I would manage to fold it... I would say he is trying it on, stopping u from calling for the chop more often than value betting...
It's a horrible position, I would just look at it angrily close my eyes, push call and get pissed off..