This is a great way to start a phone call to someone you know well. Obviously the person on the other end of the phone has to know who "me" is.
It's also the beginning of Adele's huge hit "Hello."
When I looked at the video on Vevo, it had already been viewed 1 017 275 832 times. Yesterday's blog post was practising numbers. How about this number - how do you say it? (Answer in the comments.)
Anyway, here's the song and a pdf with the lyrics and some vocabulary explanations. Enjoy!