1. your home decorating consists of at least one wall of posters from all the concerts you've attended at the 930, black cat, and iota
2. when you're at other events, namely the symphony/opera/theatre, you scream WOO WOO rather than BRAVO! (this happened to me at the opera on sunday when i went to see placido domingo at the kennedy center. embarassing i tell you!)
3. your photo album is more of a scrap album with all the ticket stubs and set lists you've collected.
4. when doing your monthly budget on microsoft money, you have a category for "concerts", followed by "taxis home from late night concerts".
5. when first entering a venue, you scope out not only the best spot to stand to see the show, but strategically place yourself by the part of the stage where obtaining a set list/pick/drum stick will be most feasible.
6. you have your "concert shoes" and "concert purses". ie those shoes that are acceptable for shows where there is seating, shoes that are acceptable for standing shows, and steel toe docs for the general admission shows that have a lot of the drunks and a generally rowdy crowd. and your purses that can easily be clipped onto to a belt loop for maximum dancing movement, purses that can be easily cleaned at the shows were spilled beer and mixed drinks are heavily prevalent, and purses that hold the cd's you want signed after the show.