What's a good bullet bike for a beginner?
The one you don't ride.
Not all of us pull wheelies going 70 on public roads or ride down the freeway in flip flops, no helmet, shorts and a wife beater with chick sunglasses on.
Nothing wrong with stunting. People automatically assume we're all hoodlums.
It's fun and extremely challenging. I'll do it until I can't climb onto a bike anymore.
^I agree with Freak. Stunting in and of itself is not a concern to me. Time and place.
Doing stunts in traffic is never acceptable, IMO.
Also, another thing I think you should avoid like the plague, is riding with friends who ride recklessly. Say you're in your early 20s, and you've got a friend or two with crotch rockets. I would say most of the time when kids cruize around in packs, it makes for a situation where you're not paying as much attention as you should to the road. If you can't avoid riding with friends who ride recklessly, then you're better off just not getting a bike.