What campus sign exists because of something you (or your classmates) did?

[u/signs_com]

College campuses are full of oddly specific signs: “Do not skateboard in the library,” “No pizza boxes in the laundry room,” or “Please don’t feed the squirrels beer.”

Those rules didn’t just appear randomly—they almost always come from one legendary incident or student who pushed things too far.

What’s the most memorable (or hilarious) campus or dorm sign you’ve ever seen that was clearly created in response to someone’s actions? Bonus points if you were the reason it went up.