Originally Posted by
Worcester
It's from the not terribly accurate Latin
Populo amentes extremis
There was a debate as to whether it would be more accurate to be CIS (Conscensis impedimenta sui) but I suppose the cabin crew one out on this one.
Hoc est iocus
Interesting - considering EXTREMIS has a 'S' in it, whilst I accept your answer it doesn't make any sense to me!