I have to say, they came up with some of the lamest jokes, ever.
What is a funeral negligee? (From the OP). Did they really put mom in pajamas? Is that customary in certain parts of the country? Where I'm from, you dress them in something nice enough to go to church in. Some people are getting away from that. If I laid out my husband in anything but golf wear, he will haunt me the rest of my days.
I've read the term "funeral negligee" before.
Shock, especially at a sudden and unexpected death, does things to one.
When one of my older brothers died (at home, in his sleep, of cardiac arrest, aged 40), after I went through the formalities with the county sheriff and county attorney and the body could be removed, the funeral director said he needed a suit to go with the body.
Oh, I said, and opened the closet door.
Wherein hung only my late brother's baseball uniform, nothing else.
I was confused (his home was new territory to me), because my late brother had of course used other clothing, but there was nothing else to be seen. I gave the baseball uniform to the funeral director, saying, "Well, this will have to do, I suppose."
And so my brother was buried in his baseball uniform, and everybody thought that was such a great idea, such a wonderful idea, and complimented me on thinking of it.
As it later turned out, his clothes were in other closets; it had never occurred to me that one would keep one's clothes in more than one closet, but then and again, this brother had been affluent, and I had always lived the spartan life.