Definitely does NOT mean, "Whenever you like."
I'm so nihilistic that i don't even know what it means, and i don't know how i feel about that and if i knew what it meant i wouldn't care anyway, I'd just keep chewing my tobacco and spitting on the carpet regardless of people's opinions, and I'd definitely look cool doing it. That's what it means.
"Dude, you just saved my child from that cobra driving a tank into that orphanage! Fuck me right now, please!!!"