Santa Claus?

Never having sex prior to the wedding!

Don't run with scissors, you'll hurt yourself. Don't know if that's a lie though.

Tooth fairy.

What's that one about poking your eye out?

Don't cross your eyes, they'll stay that way.

Maybe. In reality, nope, not going to happen.

In "The Christmas Story" by Truman Capote, the protagonist, Ralphie, wants a Red Rider BB Gun. His mother says no, that he will shoot his eye out!

Another one I just thought of - don't go swimming until x amount of time after you have eaten.

Is it a white lie or an aphorism or a folk culture tale?

The lie would be "everything's fine".

First born was premature. (Only because everything else I could think of would be much more than 30%.)

Tooth fairy, Easter Bunny, and Santa Claus.

Eat this, it will put hair on your chest.

If you want to be strong like Popeye then please eat your spinach.

Georgysmom, my grand father always said it'd make my hair curly if I'd eat things. Guess he didn't think hair on my chest was something he thought I'd desire. He was right!

When I was young, my mother used to tell us to, "Sleep tight and don't let the bed bugs bite!"

It wasn't until I was older that I realized that there might be a possibility of bed bugs AND that it was my responsibility to make sure that they didn't bite me!! Good grief, no wonder my hair is gone!

Rob, I would tell my boys it will put hair on your chest and my girls, it will put chest on your chest.

I have eyes in the back of my head.

The stork is going to bring you a baby brother/baby sister