I don't support aggressions. Said this, something stops being funny when you feel offended in some way. It seems the wife was diagnosed with alopecia. Only the person who lives with someone with a disease knows how it affects them on their daily basis. So I don't know if it was a set up or not but i find it to be a little bad taste joke. If you don't know about sth, you shouldn't joke about it. That's it. And I'll repeat again that I don't support his aggression..