MOL you just don't get it do you? Smoking in the toilet is seriously bloody dangerous - aircraft are not coaches my friend, they cannot be just stopped and disembarked if it all starts going wrong - and how would your 'friends' have reacted if, having ignored the safety demonstration in favour of a little laugh at the flight attendants expense, they had to evacuate in a hurry - don't tell me the answer .. I already know it.
We in the airline industy are heartily sick of the childish, brainless oiks who think it's funny to 'mix it' a little and as a consequence threaten safety and frighten the wits out of proper passengers.
Grow up or walk there - we don't want you.