I'll get this started today but someone else is going to have to keep it going. If you answer a question correctly, post a new one. Others can also post trivia questions. Any topic is fair game. If nobody gets the answer in a few hours, please post the answer.
A Happy Days episode featuring Fonzie in swim trunks and a leather jacket inspired what phrase that means a show has hit its peak and is now on the decline?

AKA GoodLuckBear14