1) Fold pre.
2) Breaking the 2nd best hand you can make with this draw is a bad idea, especially when your opponent is drawing two. If you drop the nine, you're hoping to catch an 8, which gives you four outs twice. Not the greatest odds
Once you decide to play this trash, sit on the nine. But really, fold pre. You can only catch an 8 or a nine to give you a hand you're happy with. I don't think this hand is really playable from any position.
However, showing down this hand will do wonders for your image. I'd instantly make a note on you as a fish, since you're either playing 3456, or drawing to a nine UTG.