Love my 49ers, I've got a pretty dedicate crew of die hards that I like to get together and watch games with. Also enjoy the Giants as well.
There are too many things that I enjoy doing so I will list some of my favorites. Hiking on a nice clear day, going on a bar hopping adventure in SF or on the peninsula, thrift store shopping (always treasures to be found), trying new and interesting restaurants, cheesy or low budget horror movies and entertaining people (I host two karaoke shows per week).
Music is a big part of my life, so chances are I might know that song you're singing and join you lol.