Who said "Everything hurts, but that's okay because I'm used to it."?

This quote is attributed to Billy.

Everything hurts, but that's okay because I'm used to it. - Billy

"Everything hurts, but that's okay because I'm used to it."

Billy Courage

"I'm a big fan of science!"

"Mandy, wouldn't it be great if we could stay young forever?"

"I love the smell of destruction in the morning!"

"Why does everything have to be so complicated?"

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."