how to spell ‘MISSISSIPPI’

A bus stop and two Italian men get on. They sit down and engage in an animated conversation. An American woman is sitting across from them.
The woman isn't paying attention to their conversation at first, but her attention is grabbed when she hears one of the men says:

"Emma come firsta. Den I come.
Den two asses come together.
I come once-a-more.
Two asses, they come together again.
I come again and pee twice. Then I come one lasta time."
"Hey…You foul-mouthed sex obsessed pig," shouts the lady indignantly.
"In this country, we don't speak a loudly in public places about our sex lives…….."

"Hey, coola down lady," said the man. "Who talkin' abouta sexa? I'm a justa tellin' my frienda how to spella 'MISSISSIPPI'."