Oh right, I see what you're on about now but your nuts.You ask someone to please stop fucking talking.
They respond "You want me to stop talking? Okay, I'll stop talking right now. Just like you asked me to earlier. Okay. Bye."
Not exactly what you had in mind, was it?
It's a bit more like this.
"Stop that"
"Okay"
If anything you should really send them an email saying thanks.