weird donk

[DrVanNostrin]

It is possible that he has a monster and didn't want to knock out UTG, so I don't like raising. If it was HU the whole way I'd raise. But just call here.

[Eraserhead]

To me it looks like it could be A high thinking "Oh, the board double-paired, I gotz the nutz", but that's maybe only true for a bad player at 1/2 where I hang about. That player would then call a raise with his A high.

"Villain is loose and stupid. Hes made some awful bluffs..." Raise. If he hasn't 3-bet stupidely, I guess folding to a 3-bet should be in order. I'd call though, and hate myself for raising in the first place.

[Romulet]

It means he has a 4(or some wierd straight). You have to call though! I get it all the time when, especially when the bottom card pairs on the river and then they donk you, you know they just hit their 5 outer but you have to call.
It's even worse when you 3 bet preflop with aa and the bottom card pairs on the river then the donk ckeckraises when the bottom card pairs. You know he has it but you have to call.

[sweetjazz]

My default used to be to raise here because I would get paid off by a ton of worse hands. But as the games have gotten a bit tougher, you're beat here more often than you're getting called by worse, so just call unless you have specific reads based on his previous bluffs.

Also, I don't think this is a weird donk. A loose passive player could easily have played 4x like this. It's not like he donked a 9h river, where you'd have a fist-pump raise.

[bobhalford]

I have no idea what to do. If I was at the table I would just call. However, he may be betting 88 for fear that you will check behind AK, or perhaps he's just bluffing a busted diamond draw and isn't paying off. He could easily have A4 too. I'm not sure it matters much but I imagine you could raise and fold to a 3-bet. I just hate raise/fold plays in general which is why I just call here.