I think it mainly just gives people something to talk about:

"You got a rattlesnake rattle inside thet Dee-Eighteen, boy?"

"Yassir. It's got elebin rattles an' a button."

"You killitcherself?"

"Yassir. I shot 'im while we 'uz deer huntin' one day. He done bit one uh m' dawgs fust, though."

"Tha's too bad." (Spits a wad of Redman and begins to play "Ol' Shep".)