(In no particular order)

1. You’ve almost rear-ended the car in front of you because you were analyzing a font on a billboard.
2. You get pissed when a free Photoshop brush you download is less than 1000px in size.
3. You’d rather study the paisley pattern on your boyfriend/girlfriend’s shirt than listen to what he/she has to say.
4. You can use keyboard shortcuts at light speed, blindfolded, but you can’t type a paragraph of text without staring at the keyboard.
5. You’ve had “Software Nightmares,” when you’ve been working way too much.
6. You consider meals interruptions.
7. You’ve learned your lesson and stopped using the word “final” in any file name when saving.
8. You clean your keyboard more often than you wash your car.
9. You’ve intentionally given up trying to explain your projects to non-designers.
10. You see CMYK and RGB like Neo sees the Matrix.
11. You’d rather organize your desktop than your sock drawer.
12. When you heard that Adobe was acquiring Macromedia, you had a Design Orgasm.
13. When you look at Album art all you see are grunge Photoshop Brushes. (Then you see the album art a couple minutes later)
14. You’ve Photoshopped out a watermark for a comp or mock-up.
15. You’ve actually $paid for a font.
16. You’ve totally slaughtered a great design concept because the client thinks he/she knows best. (everyone thinks they are a designer)
17. The amount of words you’ve written with a sharpie labeling burned discs total more than the amount of words you’ve read in novels.
18. You’ve had to explain to a client that a layered file wasn’t part of the deal.
19. You’ve kept a ragged concert ticket just so you could scan it.
20. You’ve nicknamed the OSX spinning wheel. (and not affectionately)
21. You bookmark a resource more often than you have a fun night out on the town.
22. You’ve intentionally overbid a project because you can sniff out a bad client from a mile away.
23. You can’t go to a restaurant without secretly critiquing the menu design.
24. You have an amazingly huge font collection, and an amazingly short temper.
25. If you had a penny for every mouse click, you would have been a trillionaire 3 years ago

source: http://www.bittbox.com/rants/25-reasons-you-might-be-a-hardcore-graphicweb-designer/