I've searched the net and lots of people have asked this question but no one has a definitive answer. I have always heard mario say "so long GAY bowser". Sometimes it sounds like "DEAR Bowser" to me but I haven't seen anyone come up with that one. Surely someone has a real answer? Has retro gamer ever covered this? Has anyone ever asked Charles Martinez? What did you think he says?
Sometime EDGE columnist Iain Lee wrote that he actually met the Mario voice-over guy Charles Martinet at an E3. He said it was weirdly bizarre because the entire time Charles never once broke from the Mario accent!
Gotta' hand it to him though. Apparently he's a really nice guy. Very friendly.
Freestyler: A customer that's too hard to please, complains all the time and wants everything for next to nothing.