Diseases that the opposite sex has that gives you a reason to not be around them. When you get older, cooties becomes known as "STDs."
Age 8: "Ewww... She has cooties, I can't talk to her!"
Age 15: "Ewww... She has herpes, I can't sleep with her!"
Age 15: "Ewww... She has herpes, I can't sleep with her!"
by intelligent young'n August 25, 2003