I remember when I was about 7 and I was inside with my brother, I was looking under my mothers bed and found two things I THOUGHT were balloons but were actually condoms, But as I said I was 7 so I didn't know the difference between the two.
I gave one to my brother who was 5 and we went outside to our neighbours (It was a one-way street up the hill. A nice non-busy street).
I called her the candy lady because she used to /give me loads of candy, We blew up the condoms and when we got to her house she just looked at us. I think she was thinking "Lolwut".