A question asked not because the the person asking the question is actually wondering if someone is sitting "here", but more likely asked because the person wants to start a conversation with the person sitting next to the seat in question.
Dougy: "Is anybody sitting here?"

Girl sitting in class: "No..."

Dougy: "So whats up?"

Girl: *makes a strange look and moves away*

Dougy: "Dude whats her problem, she probably thought I was trying to hit on her or something...bahaha"
by Robert McSanchez January 28, 2011
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