A guy who acts normal around people he knows/is used to but gets loud and starts acting like a douche (similar to a peacock in mating season) when around, but not limited to, attractive women. This can also apply to women but that term would be defined as shecock.
Last night Phil saw this hot chick in Starbuck's and he was about to make his move on her until this total douche came along and started being a peacock. Needless to say she ran off and he was left watching bestiality mongoose porn again...
Same as peacock only this applies to women. This can also be used to describe a woman who acts like a fruit fly. Committing actions with gay men she has never met but would never do with straight guys she has known for years.
Whenever we go out Jami always has to be a shecock. The chick just needs to chill the crap out.