NEW NOTE: Boy, I don't think I've ever screwed up an attribution for anything so badly in the history of DudeCraft. Here's Charles' comment that (hopefully) lays the mystery to rest:
"FYI, that public school site is sharing them, but they're not the ones who MADE them. As they say in the description, Molly did them. Molly is Molly Lewis the artist formerly known as sweetafton23 (http://sweetafton23.com/) who does some great nerdy songs about Mr T, My Space, stalking astronauts, and peeps. She's Molly23 on Twitter (where she posted the pics of them first). "