If I were a boy, this is what I would look like:

Basics:

• Short hair, in spikes or some kind of small mohawk
• Probably have stubbles or even beard/some kind of facial hair <-- Too lazy to shave every day. :P

Everyday wear:

• Baggy (cargo) pants and hoodies
• Geeky t-shirts
• Sneakers
• Caps when having a bad hairday

Casual dressed up:

• Nice jeans that "hugs" the right places
• Shirt in a nice color, long sleeved, but rolled up to the elbows
• Vest!
• Fedora!
• Sneakers