Well, actually, Matt got it from Charles Brown's dog.
TRANSCRIPTION COURTESY OF JOSEPH HOUK -  (Pilgrim, to CW and MG) "There was a gigantic, terrible storm last month that wiped out all our crops and livestock, so we don't know what we're going to do about a Thanksgiving dinner!" (CW) "Hmm... Sounds like a hurricane, Matt." (Indian squaw) "Our tribe brought some corn and an assortment of grains, might something be done with those?" (MG) "I've got an idea... One that I can thank my good friend Charles Brown for... [MG explaining the cooking process] ...And you put the dried kernels into the pot with some cooking oil, shake it around for a few minutes and soon they'll start popping. That's why we call it popcorn!" (Pilgrim) "Delicious!" (Lady Pilgrim, holding a baked-dough pretzel) "Am I doing these pretzels right?" (BG, holding a plate of toast) "What? No jellybeans?" (CW, holding a bowl of butter) "Those won't be around for another couple centuries..."