TODAY'S BRAINTEASER:

Brent completely empties out his locker.  The next time he opens his locker, something is in it even though he has the only key.  How did something get in his locker, and what was it?

CLUE #1: The locker has NO VENTS for anything to get in. 

Clue #2: You have to think outside of the box!!!!!

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