Why wouldn't you join in? Seriously though if the person knows they are getting to you, that just fuels the fire. I say get really into it and explore some crazy fetishes that may even freak them out. Oh and your welcome Ganja.
I had a lady with a hispanic accent call me about once a week looking for somebody named winnie,short for Winifred,I suppose.Anyway I'd pick up the phone and hear "weinie-weinie-weinie".It didn't piss me off--it was funny actually.I always told her "there's no weinies here",but she didn't stop .--------You can set your phone up so that blocked calls won't even make your phone ring.