First hand is horrible. Yeah he obviously has a set for me, what makes you say this guy is a donkey? What are his stats running at? I don't mind his weak bet on the flop, it's a dry raised flop that is likely to have hit one of the other two, so it's begging for a raise from a jack or overpair, and a call from an ace or underpair. A larger bet likely only gets called by a jack, and an ace folds. A check here loses value.

If this guy is capable of spewing like in the third hand (is it same guy?), then yeah I'd call TPTK, but I'd need to see him doing this often. I can fold the best hand to these kind of muppets, because if he's spewing with air, my fold only reinforces his style of play in his mind, and he'll do it again. He can't have a set every five hands, so maybe I fold this and patiently wait for a better spot, say overpair, where there's a higher chance he has top pair, and wait for him to spew, which he will if he's a donk.

This call with 88, are you making these good calls often enough to compensate for the AJ hand? If so I think you can go ahead and keep making these hero calls. If not, well, I guess you have to take a different approach with them.

Let them spew and hit them hard with monsters, that's how I tend to get paid off by donks. Obviously sometimes they actually have the goods, but we're men, we can take a punch on the chin so long as we give him three punches in return.