I've been to a very large number of funerals. At every single one, it's never failed that I'll think of the world's funniest joke or something incredibly retarded that will cause me to have to tuck my chin into my chest and try not to draw attention to my laughter.
Your friend or family member is laying there in a closed box, and you start laughing. WTF?
When I was growing up, I was forced to go to church every Sunday, and this too was a time of great laughter and tucking of chins.
Anyone else have this response to uncomfortable situations?