There is only one explanation - Lady Gaga's Twitter account is hacked.
I don't know it just doesn't seem right. See the link account - https://twitter.com/ladygaga - or a particular post - https://twitter.com/ladygaga/status/391995947841908736 - this crap definitely doesn't look right:
LADY GAGA IS ON DRUGS! HER CAREER IS OVER! (been an addict for 10years) #WriteWhatUWant My recovery is a daily battle pic.twitter.com/EXHxuDcT1b
— Lady Gaga (@ladygaga) October 20, 2013
Some major players - Google, Facebook, Dropbox, Amazon, Github - have introduced two step authentication. Waiting for Apple and Twitter to catch up.
Anyhow - Lady Gaga's Twitter is hacked. I was at #iTunesFestival and it was a mindblowing experience - she is the queen, one cannot deny.