I do Mountain bike actually, I have an alluminum frame mongoose, its a cheap one but i bought the frame used and rebuilt it all myself
I've been all over penny park, including some dagerous areas but I'm not a pro I'm just crazy...
Edit: Here's a quick picture of it, pretty much stock, bald rear tire and a random wiggle on the rear wheel, but its fun...
EDIT: yeah the seat post hits the damper, another thing i have to fix....