Charlie Brown has given us enough specials for all the best holidays, but did you know the very first Christmas episode came together in a record six months? Or that it served as inspiration for The Grinch and Frosty the Snowman? Grab a blanket and brush off that dirt, as the 30th episode of ‘You Think You Know TV?’ pulls the football right out from under you with some holiday facts from Charlie Brown!

Charles Schultz’s Peanuts gang actually made their first animated appearances in an early Ford commercial, before Coca-Cola came up with the idea to sponsor a full animated Christmas special. The effort came together from conception to air in only six months, a staggering effort, considering the 13,000 drawings involved.

‘You Think You Know TV?’ is a ScreenCrush original series that dives deep into the worlds of your favorite TV series and freeze frames a few tidbits you might not have known, as with our other installments for Tales From the Crypt, Buffy the Vampire Slayer, The Twilight Zone, American Horror Story, The Sopranos, Vikings, Twin Peaks, The Fresh Prince of Bel-Air, LOST, Seinfeld, Batman: The Animated Series, House of Cards, Power Rangers, Family Guy, Agents of S.H.I.E.L.D., Breaking Bad (x2!), True Detective, Empire, The Simpsons, Hannibal, Star Wars Rebels, Better Call Saul, The X-Files, The Flash, Arrow, Mad Men, The Walking Dead and Game of Thrones.

Our companion series ‘You Think You Know Movies?’ has already tackled everything from The Exorcist to Spectre, but now we’ve picked out a terrible tree by which to vent some good grief and enjoy vintage Charlie Brown.

Watch more TV installments of ‘You Think You Know’ down below, in addition to our Charlie Brown entry above, and let us know what shows we should cover next!

Check Out 100 TV Facts You May Not Know!

More From ScreenCrush