On rare occasions, when even Lucifer has run out of ideas for interesting torture tactics (because he loathes to reuse them, even though he knows he'll end up having to. After all, they've got forever to start all over again), they find themselves sitting in a circle, in some twisted kind of boy scouting, complete with marshmallows and sleeping bags. Even if the peace doesn't last the night, and he is woken by the teeth of illusionary wolves tearing his throat out, it's kind of fun. One time Sam hid out with Adam and taught him about being an actual hunter, the kind that involves animals and bear traps.
Just the once both Winchester's made it through the night to find Lucifer and Michael huddling together in one sleeping bag.
After that they never live past four thirty.