When I was a youngish adult my parents went away somewhere for a bit and I went back home to look after the cats (and the house). Mum told me a story when they got back.
Dad was freting about the cats, were they ok? were they being fed? He announced that he would ring my sister, let's call her 'Lucy', to see if they were ok:
Mum said "Lucy? why would you call Lucy?"
Dad ~ "because she is looking after them!"
Mum ~ "No she is not"
Dad ~ "Oh! well, I'll call the other one then"
Hence forth I have been known as 'the other one'
I have had laryngitis for the past couple of days, my voice is barely an audible whisper (and unfortunately not at all husky and sexy). This evening I called my mum.
Me ~ "Hi Mum"
Mum ~ "Hello darling, what is wrong?"
Me ~ "I have laryngitis"
Mum ~ "Again?"
Me ~ "I've had it before?"
Mum ~ "Yes, I think so, a few months ago"
Me ~ "Oh? (feeling rather foolish to have forgotten such a thing), well then, yes"
Mum ~ "Are you at work?"
Me ~ "No, why would I be at work?"
Mum ~ "Well you were earlier"
Me ~ "Mum, it is me, the other one"