Richard was rather startled to come home one day to the discovery that Door had apparently adopted a short Scotsman with very hairy feet.
"Door? Who's this?"
"His name's Pippin. He's going to stay with us for a bit - there was some kind of time anomaly or something, and the Black Friars are working on a way to send him home. We're putting him up till then".
"Oh. OK then". Richard, having learned the ways of the Underside by now, was probably wise to ask the next question.
"Pippin… you are human, aren't you?"
"You're… not human?"
"No. I'm a hobbit".
"You haven't heard of us, then? Don't worry, Door hadn't eith-"
"No, no - I have. There were two whole books written about your people in my world".
Pippin perked up at this news. "Great! Then you'll know how we like to live?"
Richard groaned inwardly. Yes, he did know. Better summon the Marquis and scrounge a few favours involving copious amounts of food…