The first record I ever bought was Long Tall Glasses by Leo Sayer.
I must have been about 5 years old I think, somewhere in the early '70s. and Leo Sayer sang this song on a tv-show called Toppop (Dutch version of Top of the Pops).
The lyrics included some lines going: you know I can't dance, you know I can't dance. And he did this silly dance. Being the innocent child that I was, I imitated this dance in front of the television.
My parents wanted to buy the single for me and took me to the recordshop where I performed my silly dance for the man behind the counter and he immediately recognized it and laughed and handed me my first ever record!
Ah... the good old days...
http://www.youtube.com/watch?v=hbit42aWJ5k