Now THAT'S interesting! I dare you to come up with something for Naboo! Come on! I dare you!
I don't know a tenth as much about the prequels as I do about the Trilogy. I assume it is a made up baby-talk word he uses when conversing with his increasingly embarrassed children.
GEORGE
Nabooboobooboo! Nabooboobooboo! Who's my little Boba Jett?
JETT
Dad, will you stop calling me that, please?
GEORGE
Rarr! Look out! Here comes the rancor!