Before you get any wrong ideas, I did take my dad to see Prometheus on Father's Day. This is just something I decided would be a very late gift when the idea came to me last week. It's a spoof of the classic Japanese movie, Lone Wolf and Cub, but instead of Ogami Ittō's (samurai/ronin) and Daigorō (his son), I replaced them with a mouse, which is his Chinese zodiac sign, and cow, which is mine.
Rat => Mouse
Ox => Cow (I was born in CA, so I'm a "happy cow," get it??)