"Sans ought to be grateful, if you ask me. We both know there's no chance he's gonna be able to put in full-enthusiasm trick-or-treating the whole event. But if we SAVE, then we can basically trick-or-treat efficiently enough to count as 2.5 people. More than enough to pick up his slack." Makes sense, right? Surely he'd look the other way if he benefits from it. People are all the same, deep down. For the right bribe, morals change in an instant.

Or, you know. Not a bribe. Altruism! Friends share, don't they? Help each other out. That's what they'd be doing. Carrying him through the moments where he just sucks too hard to do it by himself.