1. one who complains, whines, or cries about a task he is given.
2. one who is given said task and can never complete or for that matter hack it.
3. one who can't sit still, possibly from a slight case of ADD.
Shilabba: I gotta work on what holiday? Who does that? Wow I can't come in when the boss said too, I have to surf. No I can't sit still. I'm gonna leave early again even though you stay till 2 in the morning every night. I know we agreed on it, but I still want to go home. I can't sit here any longer. Wahh I need to go back to where I came from, I can't hack this stuff. No one treats me right.