It is used just for the receivers benefit Mss D.
I mean when the phone rings with one of these don't you think "Twat! You texted my landline instead of my moby didnt you?" I would never do that. I am so superior to you. Life favours me, it laughs at you cos you cannot even send a text message without fvkcing it up"
We sit back and sip a cold drink in self satisfied comfort.
Cos we have never done that have we? eh? eh?
I havent.
Never.
Ever.
Like.
Simples.