I guess it edges out sealing a trash bag over the head. Barely.
I once threw a guys popcorn across the room because he ate to loud. So I think it right.
They should be removed. It took me years to learn this myself.
But of course.
May I suggest using super glue?
Nope, but i do however think it's morly right to wait for a movie they love and do the same. however would it be correct to do? no and i wouldn't do it.