Let's see...
You know you're a quilter if...
*You have been able to gain inspiration for a quilt from one or more of the following:
--Video games
--Japanese anime shows
--Horror movies
--Heavy metal bands
*Your friend, who had a C-Section, tells you that the doctor sewed her up using a blind hem stitch because she knows you'll find that information very interesting.
*The lady who usually cuts fabric at Wal-Mart jokes about how many times this week she's has had to cut fabric for you and laughs a little when you say "I promise this will be the last time for this week!"
*You have at least three Yahoo! Image Searches on your favorites that involve quilting. Even more so if each of them are from the same search (like for "quilt" for example), but each link shows results for a certain image size (one link for wallpaper sized images, another for medium sized images, etc).