also used as general excited utterance, meaning something didn't go your way, or someone is being difficult and hard to please, or no one understands your plight in life...
also adj. to describe someone with any of the following qualities:
1) one who pinches nipples often
2) one who impedes others' progress
3) one who dates people in their peer group in rapid-fire order and leaves them wanting more, but always seems to be taken/unavailable
4) one who is incorrigible
You don't have to be such a bitchnipple about it.
If she wasn't such a bitchnipple, we'd probably be dating by now, but I don't like someone who's been around.
One of these days, you'll stop your bitchnipple ways!