In fact, I'm incredibly amused by how compact Lupin can be. So, I think if he was really tired, he could easily fall asleep in almost any crevice, just by rolling into it.
And on those days, his gang goes around the house, literally looking for him behind the couch, behind the closet, under the table, and so on. Whoever finds him first gets a dollar from the losers.
Honestly, I never thought I'd live to see the day when I'd have Lupin headcanons.😶











