I used to believe that menstruation fluid was blue because of the way TV commercials showed it.
A childhood belief about periods

others believed things like this
- I was horrified when my first period arrived. It wasn't blue, like in the commercials for sanitary towels.— Jane
- When I was you younger, I used to believe men had their menstruation.— Lilly-Rose Bessin-Collin
- When ever we went to the gas station, it was to replace the blinker fluid.Anon
- Eifel 65 - Blue
I'm Blue (if I was green I would die...)
[I'm blue, da ba dee, da ba di.]— Matt - You know the eifel65 song "Im blue da be da ba di"
I thought he said "I'm blue I'm in need of a guy"— Anna - The song "Reverend Blue Jeans" turned out to be "Forever in Blue Jeans." Who would have believed that?— music lover