Zeus. He constantly has sex with mortal women, despite having a wife. He became king of everything, while Hades, the older brother, got stuck with a whole lotta dead people. No one can tell him he is wrong, cause he is teh king. He uses his power to be a douchebag. Because if this, he is a zeusbag.

Friend 1: "Aw man, I could totally fuck a catgirl right now.."

Friend 2: "That's it, you're going to horny jail."

(Hanging out with friends)
Random guy: Why are you hanging out with him? He's such a loser.
You: Man, fuck off my couch. Quit being a God damn Zeusbag!