[okay so like maybe he didn't really think through the logistics of what this prank entailed buT]

It's so over the top! There's embroidery and fancy fabric and everything...!! [he's gonna wave his arm dramatically - his cloak follows - as if to make a point] Flashy for no reason other than just because - I dunno, man, it sounds like your M.O. to me.

Though I guess you'd normally have a better cover-up than 'the town did it' too...

[so maybe it's

true????

apparently he'll buy into lupin's logic because it's illogical and he thinks lupin's better than that]