Dyed in the Wool

One time, after a friend's grandmother had died, the friend told me that his grandmother had been dyed in the wool.  I do my best to be respectful of other cultures' traditions and what-not, but I couldn't help but point out that this sounded like a very odd way to mummify someone.  He punched me in the face and stomped away.  Some people are very odd about burial traditions.