JJ against crazy mo fo- been all-in 5 times in 10 minutes

[snowbank]

This guy has been at the table maybe 5 or 10 minutes. He's already moved all-in 4 or 5 times. He hasn't shown down a hand yet. When people are debating calls, he says he has like garbage hands, but doesn't get any calls. He's done it 2-3 times pre-flop and once or twice on the flop. We both have about max buy-in for the table, and he raises utg to 4X bb, I re-raise to 12X bb, he pushes. What's your move?