Acronym for pretty cool guy. A pretty cool guy is like a bro without all the douchiness/frat boy attitude. A pretty cool guy is intelligent, fun to be around and is supportive when they need to be. They're casual, down to earth and charming.
PCG can apply to both men and women. A lot of women are pcgs.
I don't like her music but I think Ke$ha would be fun to hang out with. She seems like a pcg.