I can remember a Yankee guru addressing us. At first she told us what a wonderful sense of humour we had, but finally she lost her patience and told us our sense of humour destroyed self-esteem. And so our sense of humour was destructive.
But of course to us our sense of humour is funny - it makes us laugh - but it just makes you feel uncomfortable.
And of course you can never admit this because it would be a blow to your self-esteem.