Sorry--I hope I'm not right too. Maybe I keep coming up with horrible scenarios so whatever horrible scenario happens I'll feel relieved...?

I hadn't thought of that particular Neville connection, but considering the way people who seem on board with Harry's views on Draco are I would believe JKR could consider it fit justice for Draco to wind up violently insane as punishment for making a joke about crazy people milder than the kind of jokes an average fifth grader probably makes once a week. :-(