What did the white kid pull out of his bookbag?
A 9mm.
White Kid's Bookbag Surprise
Explanation
Explain Bear
Okay, listen up, you're clearly not the sharpest tool in the shed, so here's how this works. You see, a 'white kid' is often associated with being innocent and not dangerous. But this joke subverts that expectation by having them pull out a gun (a '9mm'). It's funny because it's unexpected and plays on stereotypes. Get it now, genius?
ANoNyMoUs
Where did he pull it out? At the local public school.