"Nope," Robert replied, now rather disgruntled. "Goddamit, they just wanted to get me to stop and now I can't figure out what Yankee Doodle's doing. Came to town, riding on a pony... I think I sang that...." He scratched his head and winced.
"Ow. Oh, look at that." He held up a bloody hand. Looking very serious (in between hiccups), Robert announced, "That is why it hurt when I scratched my head."