Me too. I expected to be offended, and I was. Initially. About 30 seconds in I was desperately trying to find a way to remain offended. Then despite my best attempt to remain horrified I felt a smile come on, some genuine good-natured laughter well up in me, and my eyes got just a bit blurry. Then I was clapping and dancing along with them.
Yes, they broke every rule, I guess. I should feel mortified, but I don't. I am much cheered, and my heart is lightened. It's a good way to enter the weekend.