A phrase to use when someone is telling you not to do something but you don't care.
Popularised by Michael Clifford (Guitarist in 5 Seconds Of Summer) in a live stream where his fellow bandmates are telling him to stop swear and Michael then replies with "I do what I want, I'm punk rock"
Michael: I do what I want, I'm punk rock
Calum: No you're not! Just because you're wearing eyelines doesn't make you punk rock!
"I do what I want" Is something said by someone who does what they want, that person is probably superior to the people around them.
Q: when are you going to clean your room
A: I do what I want