When I was younger, my 2 friends told me that they had seen a funny commercial about condoms (Trojan, actually). I had no idea what they were at the time, and just laughed with them, hoping they'd believe that I knew. When they asked if I had seen a commercial for condoms before, I panicked. I quickly assumed that condoms was short for condominiums. I told them that I hadn't seen any, but my aunt owned one in Florida.
You wouldn't believe how loud they laughed. I pretended it was a joke. They believed me, and later I found what out what they were from one of the friends who saw through my ruse. Ugh!
A childhood belief about condoms

you weren't the only one
23 of you believed this