No particularly relevant history between villain and I; he's kind of a "2007" tagg reg (auto-raises donk leads, bluffs in very obvious spots, pot controls lots on A and K hi flops with less than TPTK).

This is the first hand in a good while that had me thinking for a long time afterwards...

Eff stacks 1300$ at 3-6 nl

Villain raises btn 3.5x, I flat from SB, BB folds.

flop is (46$)

I lead 37$, villain quickly raises to 105, I think for about 3 seconds and make it 260$

Villain calls after about 5 secs.

turn (pot is 560ish w about 1k behind) is

board now reads

I...