The `Born This Way` singer - real name Stefani Germanotta - is often the subject of her friends` jokes because she rarely takes her extravagant stage make-up off before going to bed.
She said: "I`ve got to wash my face at some point.
"I do get laughed at quite a bit by all my friends because they say I go to sleep a lot with my make-up on. But I say that I have to be ready for the men in my dreams!"
The 25-year-old pop star - who is single after splitting from boyfriend Luc Carl - has admitted she started experimenting with unusual make-up while she was still in school, making her a target for classroom bullies.
Gaga said: "They`d say, `Why do you do your make-up like that, what`s with your eyebrows?`
"I used to do these really big Evita brows. I used to self-tan, and I had this really intense tan in school, and people would say, `Why the f**k are you so orange, why do you do your hair that way, are you a dyke?`
"I used to be called a sl*t - I didn`t even want to go to school sometimes."