slinky I have no idea, but I can safely say that I have never met anyone with a memory as bad as his. he forgets really important stuff too (and I don't mean my birthday). He is DREADFUL.
He tidied up the master bathroom at the weekend because we had guests. He therefore put the kids' toothbrushes away (why, I have no idea, because my attitude is that toothbrushes live in the bathroom). When I was sorting the kids ready for school, I sent them up to do their teeth and no toothbrushes. I call him and then he couldn't remember where he had put them. I was furious!