With a healthy set of teeth...
Garden shears....no wait, you are referring to a bush planted in your yard, right?
trying to spin this into something s*xual but i can't be bothered. I don't know. Get a flame thrower?
Scissors first then razor... I do it for my Girlfriend every few weeks. Always with a different design.
Get a landscaper
Scissors, or hedge clippers if you mean a REAL bush.
Fire and gas.
I use my hedge trimmers.