Not got a clue... but it's been my secret name for her since about a week after she got here! I was giving her a cuddle and found myself just calling her it. OH resisted for weeks, but he has now succumbed. Bless her, she actually responds to both!
Lagwich Sandwich is a good one, but my favourite HB nickname is definitely Monty, Monty, What do you Wanty! Even showed that one to OH! :rofl: