This one comes to me secondhand from one of my coworkers, so it's not "overheard" in the strict sense, but why mess with the formula?
On Saturday night she went to a bar, and was almost immediately greeted by a guy: "Hi, how are you?"
She responded, "Okay, thanks."
"You seem like a nice person, can I buy you a drink?"
"I have a boyfriend." (This is true)
"Oh... well, do you think you might be breaking up with him any time soon?"