You have anything else to go on here? How are you seen? What do you know about the AI villian? Any stats maybe? I guess short of you giving me additional information about the villian, I call this.
First of all, AA/KK would likely have reraised PF here to isolate. Slow playing them as a flat call behind a PF raise and flat call isn't the brightest idea IMO.
Second, this is a huge overbet if he really wants your action (unless he really is thinking that deep and figures you'll see it that way), so I don't give too much credit to the set. Plus, you minraised the flop bet which he could see as weak. He could also be pushing hard on top pair or something, I suppose figuring his over aggression will save him.
Third, are the comments he typed. That screams weak and trying to intimidate you to a fold or question your judgement (again, see deep thought comments above).
Fourth, you could be behind to two pair, but you have some decent redraws. So take it as a lesson to raise more PF. At $25NL, raising 4-5xBB is not unreasonable and will still get called but by fewer players.
So if he's shown down anything that will show him as being laggy at all, then I'd instacall and expect to see AK/AQ, 99-JJ, or even 22 a good amount of the time (90% +).
Oh, and OMG LOL if he's holding 73 from the BB, call the PF raise and flopped a set. Keep playing with him. You'll have the money back soon enough.