My Grandfather was 94 years old when he passed away. He appreciated a good joke, cheesy wit included and was taken by a Marx Brothers movie in which a deaf mute attempts to gain entrance to a private establishment. The door keeper asks for the password, and the would-be enterer, not able to speak improvises by holding up a sword and a fish.
My grandfather enjoyed that story so much that he took on 'swordfish' as his own house's password and asked it of all (family members) who would knock on his door.
Grandpa, I say to you 'swordfish!'