An offensive threat to inflict damage on another person over the internet. Usually used by someone who despite years of internet usage still doesn't know the difference between Caps Lock and the Shift keys.
When 2 or more people intend to take a crap in a public bathroom but are waiting for the other(s) to leave first. This causes an infinite cycle and everyone waits and nobody craps.
2. One who voluntarily locks himself in front of his computer screen all day writing uneventful blog posts, commenting on blogs, trolling the internet, etc.
MrBabyMan is such a caplock; he spends is days posting articles on Digg and engaging in wikipedia edit wars . . . I wonder if he ever leaves his house.