1. When a person has reached their full potential of douchebaggery.

2. When a particular room or region has been filled to it's maximum amount of douche bags.
1. "Man did you see the way Kevin treated that chick? I'm pretty sure he's reached maximum douche capacity"

2. "Dude this party is full of douche bags. I'm pretty sure we've reached maximum douche capacity. One more and it's possible the room will explode"
by Pat Owen October 23, 2008
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