An incredible moody person.Similar to saying "a moody cow". They also tend to have a large number of giks and have a problem controlling their alcohol intake.
"As moody as the Winster"
"The Winster juggled her giks like a champion clown"
"The Winster staggered home with a bottle of malibu in her hand"
A person who pretends to be an expert, but really just refers to Wikipedia for all things. Or a person who is an expert at looking things up on Wikipedia.