They're the disk you put in the hole in a 45rpm record to be able to play it on a turntable.

tj

Did you hear about the actor who actually DID break a leg on stage? Not to worry…he’s still in the cast!

A pirate walks into a bar, wearing a paper towel instead of a hat. The bartender asks, “Hey buddy, what’s up with the paper towel? “ The pirate replies, “Aaarrrrr, there’s a Bounty on me head!”