Pete Townshend: "’Dr. Jimmy’ was meant to be a song which somehow gets across the explosive, abandoned wildness side of his character. Like a bull run amok in a china shop. He’s damaging himself so badly that he can get to the point where he’s so desperate that he’ll take a closer look at himself. The part where he says, ‘What is it, I’ll take it. Who is she, I’ll rape it.’ That’s really the way I see Keith Moon in his most bravado sort of states of mind."
A live version can be found on Who’s Last (1982).