NL5 AQ tptk 146bb deep

Carrots nailed it. Not sure he goes ape shit like this with a naked straight draw but he's most definitely doing this with his nut flush draws. A ton of fish think their flush draws are the nuts and play them accordingly. Other fish just chase. However, I think villain is repping the A-part of his ABCD range having limp/called then donking into you in a multi-way pot and then 3-bet jamming. That said, when we consider his entire range this is most definitely a call but villain's line leans more towards his nut holdings imo.

To the OP, def just post a range next time. Even if you're way off base, it's better than nothing and you'll get more out of it. Go through your DB and find 10 hands where you had to call an all-in and wasn't sure what to do. Use the formula in the Step 2 linkage. After you do this a few times, things will start to become a lot clearer.

The donk bet is tiny, it's not indicative of nut hands, it's a very common thing for fish to do with draws, they don't care if they're multiway or not.

The T9s is a bit meh and he may not have all combos of T9s. That isn't the point though, T9s is there to account for other random fish spew and because I've included absolutely 0 worse top pair or random fish spazz with weaker draws.