49: LOL

Prepare to get your funnybone/ulner nerve tickled! We take a closer look at the things that make us laugh: the rich surprise history of "That's What She Said" jokes, the invention of the Laugh Track, how MAD magazine came to be, comedy duos, and what actually makes hyenas laugh so much. ALSO: Wachamacallit Quiz

Learn more about your ad choices. Visit megaphone.fm/adchoices