You know you've been on the forums too much when....
Your post count has 4 digits
When its your homepage
When you type : tilt : into another forum thinking will appear
When you set bananas on fire and throw them at people driving "XFG"s
You know you've been on the forums too much when you post a "You know you've been on the forums too much" thread even though there already was a similar thread titled "You know you've played too much LFS" and refuse to call your thread spam.
Or, when you reply more than once in a thread like this (you know who you are).
OR.. here comes the mean one.
You use phones such as a blackberry when you're out of your own country just to see what is going on here at the forum (you know who you are).