I don't know. I've been saying Buku Bucks for years but recently a Freeper asked if I was from Louisiana because I used that term so maybe it if from the French.
Oui, cher. C'est Francais. :-)
It's beaucoup.
Buku = slang for beaucoup, but really who cares I'm addicted to the DU funnies. Seriously I check every morning to see your posts. Sometimes the wifey and I sit together at the PC and read them. If you ever quit posting them I sure hope it's not the week I pick to stop sniffing glue.