Weird action. No reads on the 4-bettor? I honestly like just calling since everyone wants in on this flop. Hope to spike a set and win a big pot. Pushing preflop is also +ev though.

3-betting JJ is fine. They'll call you will all kinds of dominated stuff. Just know how to let it go if you have to post-flop. It's a tough hand because newer players think it's stronger than it is. That's not to say, however, that it's not a strong hand.