I'd say that it would be best to limit yourself here, but go ahead, and feel free to add as much as you would like to.
You know you've been playing too much DF when...
*I suggest you look through the list for the genius(es?) who came up with some of these. I will add list of contributers in due time.
1. You ask for points instead of cost before leaving for anywhere
2. When you wonder why your Paper pick dosn't work as well as an iron pick for digging out rock.
3. When all of your possesions are labeled with +'s,-'s or ≡'s.
4. Your last name is "Angel of Bloody rapeanus.
5. You stop, and drop any items related to your current task to get a drink or eat
6. When you craft yourself a mug, and prefer to drink using no cups.
7. If a family member dies you tell yourself "Atleast I still have a nice dining room to eat in."
8. When someone request a mandate from you, you tell them to flip that switch right next to them.
9. You try to grab people by the thumb or third toe
10. When someone asks you what time it is, and you reply with "granite of spring".
11. You scrounge around old homes expecting to find discarded treasures
12. You avoid scrounging around in old homes because you're deathly afraid of being eaten by giant spiders.
13. You can't even FIND an old home to scrounge in.
14. You go up to eight-year-old kids and say "Why, you look like a mighty warrior!"
15. You have an unusual fear of anything thrown.
16. You assume beer, wine, ale, and rum can be combined and minced into a nutritious stew.
17. You believe that recovering from an injury of any sort requires you to lie in bed unconscious for a year or more.
18. You fear exclamation marks.
19. You try to make a piece of furniture out of stone in your garage using a mallet and chisel...
..only to end up realizing how huge dwarven shoulders must be.
20. You remember all of these from the LAST 'You know you've been playing too much DF when...' thread.
21. You notice an inconveniently placed wall and attempt to designate it for mining.
22. You start cultivating mushrooms in your backyard.
23. You name your first born son Urist.
24. You don't care, because this is a different Fortress! Reclaim!
25. You move back into a home you moved out of legally, merely claiming you are 'reclaiming your fortress.' You have 80 bearded friends to help you.
26. You lost your morning job, because you mysteriously kept vomiting everywhere after your last vacation.
27. When you hear someone eating meat sloppily, you panic running the other direction screaming:
"OH GOD! ELVES!"
Your turn, also I will add any reply submissions to the list.