homefield disadvantage
When your friend tells you he's going to a sporting event but refers to it by the visiting team. One who has homefield disadvantage does this because he/she has to be cocky in making it clear that he/she is a fan of the visitors.
"What are you doing tonight?"
"Going to the Celtics game"
"Are you flying to Boston? The Nuggets play here, tool. You clearly have homefield disadvantage"
"Going to the Celtics game"
"Are you flying to Boston? The Nuggets play here, tool. You clearly have homefield disadvantage"