the origin...

Cam'ron's 1998 album chariots of fire has a song entitled horse and carriage with the following lyrics:
And when it comes to Jimmy, my name's me too
'Cause when he got cash, I was like me too
And when he got ass I said me too
And when he got the drop I was like me too
And when he almost got shot I said me too

one example how it applies to me:
my friend chris got his truck and gave me a call. he was like i just got a new truck. and im like "me too!"