I've never seen anyone slip on a banana peel..

No really you hear all these jokes and see on movies about someone slipping on a banana peel. 

I haven't.

What careless and lazy person would drop something that big randomly on the street?

I remember one time I was bored with my friends and I was eating a banana because bananas are awesome and I threw it on the ground, stepped on it, and damn was that thing slippery LOL.

But I've never seen anyone live, actually slip on a peel.

It'd be hilarious though.