"A bus stops and two" joke

A bus stops and two Italian men get on. They seat themselves and engage
in animated conversation. The lady sitting behind them ignores their
conversation at first, but her attention is galvanized when she hears
one of the men say the following:
"Emma come first. Den I come. Two asses, dey come together. I come
again. Two asses, dey come together again. I come again and pee twice.
Den I come one-a more."
"You foul-mouthed swine," retorted the lady indignantly. "In this
country we don't talk about our sex lives in public!."
"Hey, coola-downa lady", said the man. "Imma justa teachin' my fren'
howa to spella Mississippi."