Here are some dark-humored, rude one-liners about stupidity:
1. "I'd explain it to you, but I left my crayons at home."
2. "You bring everyone so much joy when you leave the room."
3. "I'd call you a tool, but that implies you’re actually useful."
4. "You're like a cloud—when you disappear, it’s a beautiful day."
5. "If ignorance is bliss, you must be having a hell of a time."
6. "You're proof that even evolution makes mistakes."
7. "I’d


