This is a person who tends to whine and complain no matter what the circumstances are. Whiner just doesn't do this person justice, either does douche.
Man, I hated when I was unemployed. Working sucks too though. I don't wanna go into work. I don't feel so good. I don't wanna go to the doctor though. I really, really feel bad. I think it's official, I am a douchiner.