When you've got a girl and your sure you're gonna get laid one night, but don't. It is caused by either a) Shes scared or b) You're unattractive
Guy 1: So did you finally get laid by that chick you been with?
Guy 2: Nah man, I don't know why though
Guy 1: Oh, she put you under the pussybo effect
Guy 2:Dammit! WTF
A person you hate intensely not because they deserve such hatred but because they serve as a focus for your general hatred. A healthy way to dispense with excess animosity.
Jake's not really that big an asshole. He just serves as my hate sink.