1 definition by Codename Duchess
When one turns a bullet vibrator on, sticks it up the ass of a male or female then performs anal sex. This pushes the vibrator up so high it will not be able to be removed, and the vibrator will have to run out of battery power to stop vibrating.
Kate: What's that noise?
Jill: I got a Bullet Train from Greg before meeting up with you.
Kate: Wow, that's hot.
Jill: I got a Bullet Train from Greg before meeting up with you.
Kate: Wow, that's hot.
by Codename Duchess March 20, 2013