Common Sense?
OK all those who have ever played any form of joke should now be banned from flying....?
The fact that someone has done something silly once is not evidence that they will do so again. How do you know he wasn't a heavy smoker and that made him feel better about not being able to smoke on the aircraft?
The common sense approach is to ignore him, if its a joke it falls flat on its face...At the end of the day humour is not a crime, it may be inappropriate, but thats still not illegal