To complain or bitch about something.

When you dance or "whine" with the opposite sex.

The act of complaining and bitching, frequently consists in a high-pitched and earsplitting sound. Whining is a total kill-joy.
No one wants to have a whiner at a party.

This is what people frequently accuse each other of on the internet to make themselves look dominant, manly, or grown up, due to the fact that they don't actually feel this way in real life. The tactic frequently backfires, however, when the accuser displays his lack of basic grammar skills or lack of knowledge of the caps lock key.