A childhood belief about rude bits

For reasons lost to history, I used to believe that the word "tambourine" was essentially synonomous with vagina. I was therefore quite confused and intrigued when my older brother told Santa Claus that he wanted a tambourine for Christmas.

I was actually kind of relieved that Christmas when he got one from Santa and I realized my mistake. I did however continue to be intrigued with and confused by those things formerly known as tamborines.