You know you're a knitter when...

... you're at work and you look down at the sleeve of your sweater and think, "there's a knit, that's a purl, there's three knits, and then three purls..."

... instead of taking smoke breaks during the day, you spend your 15 minute breaks at work surfing knitting blogs.

... you often print free patterns on your laser printer at work instead of using the inkjet you have at home.

... you have knitting blogs and pattern sites in your favorites at work.

... you often daydream of leaving work so you can go work on your latest WIP.

... when a co-worker shows you his/her new store-bought knitted item you think, "I could make that."

... lunch break often translates into 5 minutes of eating and 55 minutes of knitting.

... co-workers no longer look surprised when they walk into the break/lunch room and see you knitting.

... on payday you think to yourself, "I wonder what kind of yarn I should buy today..."

... you update your knitting blog from work when you should be doing something else. ;o)