some weeks ago i was flyin qantas from syd to sin. and at the end of his welcome-announcement the CP added something like: ... and please be informed that it is illegal to have sex in an aircraft toilet at any time of the flight....

at least i'm quite sure he said it. i was so astonished, i could believe my ears.
[and YES, i would say thats kinda funny]

The Chaser's War On Everything (ABC Friday 2145 and no this is not a Helen Coonan approved ad!) sent up the PA quite well.
One of the Chaser's Craig?/Chris? decided to try out the announcements at an open mic comedy night.
And guess what?
It died big time, nary a laugh or even embarassing snicker.

I recall some time ago, my return flight was late, was announced late in the terminal.
A/C duly arrived, with terminal announce stating that as pax had been sick, a/c would need to be cleaned.
Upon making boarding call, pax in row 1 -13 you will be pleased to know that the pax was sick down the back. Pax in Row 14 - 21 you too are safe. pax in row 22 ..... give or take a row.
Professional?
The image that they want to portray?
Oh migod we've spilt the face paint!!!!!!!!!!!!!!!
Quick Cap'n, we need to land as we've only painted half the cabin, and we want to make sure that we get our performance bonus.

Regards

One of the reasons for having the blinds up is, that at night, the aircraft is more visible to other aircraft. In these days of concerns about airspace category, every little helps.

fact: very few pax usually pay attention to the safety briefings
fact: if humour is involved, most pax WILL pay attention.

So long as all the essential safety elements are mentioned in an understandable fashion (an important point), I applaud any decent attempt at humour in the safety demonstration.

Four Greens. Surely you are jesting?

There is a light and a whistle for attracting dolphins!

Please be careful when opening the overhead locker as your bags may have shifted and we all know that SHIFT HAPPENS!