I suggest we employ an inspector....Lets call him "Blakey"..
"You orrible person you...don't you read the safetycard,don't you listen to the cabin staff,and the Captain"..Slap..$30 fine!
When the blaggard declares innocence,explain to him that all the other passengers,safely strapped in,will sue him,if he is the cause of a diversion for medical attention,leading to them,not arriving at their destination.....Simple...