Let me see, I think there might be too many to count, but here are a few of my favorites.
1. Saying "Sorry, not enough gil." when my co-worker asked me if I wanted to order food with them
2. Tell my boss that "someone ganked my camp" when someone was in my seat at work.
3. I begin note, IMs, and work documentation with a "/".
4. Told my boss I would send him a "tell" when I meant an e-mail about a doctors appointment.
5. Cannot remember the days of the week on earth, and refer to them by days of the Vana'diel week.
6. Look for "auto run" in every game I play.
7. When someone ask you what you do for a living you tell them to /check you and when they look at you funny you go "Oh ***! I am on /anon"
8. I hit tab relentlessly wondering why auto-translate will not come up.
9.I told my boss one day that my Floor Manager was True Hearing during daytime.
10. Use auto-translate game terms when working with my callers at work.(I am a tech support geek).
This pretty much sums up what I have done in the past couple months. I wrote this a couple of years ago, it is some of the same and a few other I do not do as much anymore:
http://redmagerage.blogspot.com/2007/10/you-play-too-much-ffxi-when.html.