Sense of humour in Tanzania

Swahili lends itself beautifully to stories and humour.
I have always found Tanzanians to be cheerful, respectful people.....but always ready for a good laugh and a joke but there were some areas of humour that were off limits.
I remember that generally Tanzanians were self deprecating, they always started the joke or the humourous story portraying themselves as the "victim". It was bad manners to laugh at anyone else's expense unless you were in a very good relationship or that person had actually "invited" the joke to be on him/her.
Another no-go area was the elderly. Tanzanians have a deeply ingrained respect for older people, no matter how troublesome or irritating they may be.
Crude or sexually descriptive jokes are regarded as just that......crude and bad mannered.
The insults though, are poetic.......some of the "put-downs" I heard in Tanzania were worthy of being recorded! They could make you feel as low as worm, with no route for a riposte. But if you did manage to give as well as you received, oh happy times for everyone listening on......the mirth was contagious.