Here are two:
It's a nice warm summer in a welsh sea-side town and the chairman is giving the concluding prayer. He starts to slow down and then there is a pause. It lasts long enough to make you open your eyes and lookup in time to see him wobbling backwards and forwards.
Two brothers leap to the platform and catch him as he is about to pass out but then, in a rediculous scene, instead of helping him to a chair they prop him up between them and one of them carries on with the prayer! But not just a quick "thank you Jehovah, Amen" ... oh, no ... he starts on one of those "gread loving father god jehovah, soveraign lord of the universe and creator of everything good oh father" monologues !
Another one:
When I was little we used to rent a hall and in the hot summer the windows would be open to let in some air. Without curtains the insects would be attracted by the lights and fly in. One evening, everyone's attention was on this huge daddy-long-legs that was swooping round the hall and people were ducking as it flew toward them.
At the end of the meeting the prayer began and my sister and her friend stood in front of me were obviously not keen on closing their eyes with this 'killer' on the lose and were looking round with one eye open all the time.
It seemed like a good idea at the time ...
After it had flown behind us, I reached out and tickled their hair behind their ears both at the same time. They both let out really loud screams and started waving their arms in their hair.
With all the comotion the chairman just said "er ... amen".
Best part was ... they never knew it was me !