By the way, did you know a "new" Flintstones cartoon is coming out - "Yabba Dabba Dinosaurs" the initial impressions are that it is perhaps not looking good.
this doesn't have much to do with anything, but i started googling flintstones stuff and ended up on a cartoon pregnancy wiki
http://cartoonpregnancy.wikia.com/wiki/Cartoon_Pregnancy_Wikia
I had always assumed it was luminescent fungus or fireflies or something. Fred Flintstone has invented the television and the necktie before he invented shoes.