Lady Gaga has sent her fans into a rage and it's all over four words: "i don’t remember ARTPOP."

ARTPOP is the singer's third studio album. It features such hit singles as "Venus" and "Applause." "Do What U Want", featuring R. Kelly, is another track on the album, which Gaga tweeted last night, she "doesn't remember".

Whether it's because of the R. Kelly collaboration that she is now distancing herself from the album, or whether it's simply because she's so grown so much in her career since, we can't be sure.

What we do know is there are many fans of the artist and the 2013 album out there and they are mad and deeply upset over Gaga's "betrayal".

Here are some of the best and most hysterical responses.