Did you know that when he was doing 21 Jump Street up here in town, he saw a billboard travelling somewhere as himself as the character holding a gun in one hand, he said that the slogan read "Other kids pack lunch..." He hated it so much, he and a friend went up to the billboard that night with some paint (they were on rollerskates - he said it was so absurd, they had to top themselves) and began to paint on his face to make him looks like Groucho Marx or something. The police arrived, shone a flashlight in Johnny's face and looked dumbstruck -
They said "But...that's you up there!"
He said "Yeah, I know..."
So they told him if he was quiet and didn't disturb anyone, he could go ahead with the quip "Hurry!"