Cheesed off

Numerous times, when it comes to teamwork, I've wondered how some people can be like this:

"Bah, I don't want to come because I just don't feel like it."

"Whatever, the other people can do the work."

Heartless. Selfish. Unethical.

Thus far, there has always been a black sheep or a thorn among the roses.

Screw them!