Sheldon: The true hero doesn’t seek adulation, he fights for right and justice simply because it’s his nature.
Leonard: Penny’s hooking up with her jerk of an ex-boyfriend and I have indelible ink on my forehead!
Sheldon: That’s you badge of honour, your warrior’s wound, if you will. I was wrong, minstrels will write songs about you.
Sheldon: ♫ There one was a brave lad names Leonard, with a fi-fi-fiddle-dee-dee. He faced a fearsome giant, while Raj just wanted to pee.