What is it with certain motorcycle riders?

The road running past my apartment complex is really popular with motorcyclists. All day, you hear them cruising up and down the (wide, gently curved) street. It's even worse after 10:00 PM, when all the lights switch to "flashing yellow".

Also, at that time, the bikes with the straight pipes start going. And, one especially loud biker likes drag racing at 4 AM. He ALWAYS revs loud around the apartment.

A few weeks ago I found out that the loud revving and shifting was because he lives in the apartment building across the parking lot from here. *sigh* He did see me staring at him from my window, though, and the noise abated for a few days. But only a few.