The man asks him, "If you don't mind me asking, what's your secret?"

The salesman replies, "It's suh, suh, suh, simple. I juh, juh, just go to the duh, duh, duh, door and suh, say, 'Duh, duh, duh, do you wuh, wuh, want to buh, buh, buh, buh, buy a bible? Or wuh, would you luh, luh, luh, like muh, me to ruh, ruh, ruh, ruh, read it to you?'"