Someone who walks really fast to the door so they don't have to hold open the door for someone that is approximately within 5 steps away from the door.
coworker #1: "Did you see that guy speed up when he got closer to the door? He just wanted to make sure he didn't have to hold it open for me.

coworker #2: "He surely displayed Door dis-etiquette! So Rude!"
by Lolita75 January 12, 2010
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