That reminds me of a story...
A friend of the family (she's in her 70s now) called her mom on her wedding night and was absolutely hysterical. The mom calmed her down and then asked, "What is going on?" The girl said "Mother, he tried to stick his...his.... thing inside me." Once the mother stopped laughing she said, "Honey, you better let him and I'm pretty sure you'll like it." and hung up the phone. Apparently she thought sex was just rubbing up against each other and didn't involved any sort of penetration (like Ken and Barbie, maybe?). Ahhh to be so uninformed.