They sit down and engage in an animated conversation. The lady sitting behind them ignores them at first, but her attention is galvanized when she hears one of the men say the following:
 "Emma come first. Den I come. Den two es come together. I come once-a-more. Two es, they come together again. I come again and pee twice. Then I come one lasta time."

 "You foul-mouthed swine," retorted the lady indignantly. "In this country we don't talk about our sex lives in public!"

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

She has no problem with dirty talk...