look up any word, like rimming:
 
1.
The stoner's Xbox. Slightly more powerful than its 360 counterpart due to the fact that the graphics engine is a bit more advanced when on weed.
That stoner down the street got an Xbox 420!
by GaMeRuInEr January 14, 2007
 
2.
1. Getting high and playing your next-gen X-box.

2. Modding your X-Box or X-Box 360 with Marijuana themed art.

Killer weed dude, wanna go play some X-Box 420 brah?
by Danthol April 01, 2006