Cold caller yesterday from a charity. Baby dd was crying on her play mat, he launched straight into a pitch about the charity's work. I waited for a minute to see if he would stop when it was clear that I had to see to dd (she was loud enough for him to hear).
He didn't so I said, "I'm just going to stop you. I need to go but I will look on your website". He said, "do you mind if I ask why you're not donating right now?" 
I told him that my baby needed feeding and I don't like signing up for things at the door. Is this a question that they have to ask (for stats or something) or is it a tactic to test if you're lying?