I think I'm only dealt JJ

[sirlurkalot]

Your turn decision is read-dependent on the decent player. If he 3bet PF, what's his range? Would he 3bet to isolate with AK,AQ,AJ-A9? Would he three bet any pairs small enough to hit the flop; probably not? From your description, it smells like AsKs or AsQs and he's going nowhere until he sees that river card, perhaps 10-10,9-9,88. You 3betting turn doesn't accomplish much unless he'd lay down those pairs.
As for psycho, lol, I'd like to call him down if heads up. Don't see how an overcall is like ever successful.