Smoking in the loo
Whatever you might have thought, don't do it as they really don't like it.
Flying back from Berlin to EMA last night and the only information the pilot deigned to convey during the whole flight was the fact that someone had been found to have been smoking in the front toilet, one shouldn't do this etc followed by a lacklustre recitation of the penalties involved - something like £50,000 fine and/or 15 years in prison.
Then, after landing at 11.15pm, as we all settled down to wait a full 25 mins for The EMA Bus to get round to picking us up, Knacker of the Yard boarded the flight along with one of his henchwomen and removed said offender - a young chap who didn't look like a hardened 80-a-day man to me but who may have been out to prove a point.
Quite how they can get enough evidence against him to make a charge stick though ... "Well I went in after him and it stank of fags ..."