When something is inappropriate. Like smiling when someone is telling you a sad story about yourself. Or getting
Smiling when someone is telling you a sad story is an example of inappropriety.
Or letting wind during a minutes silence.
Or watching your mother's breasts when she is serving lunch.
verb. When you stab someone with a ballpoint pen, ideally Pilot (TM), when ordering chicken or waffles.
"Don't make me brutat you Gaz, we are going to KFC"