Affectionate yet somewhat insulting nickname for William Shatner, star of anything he gets paid for.
Hey man, did you hear? The Shat just released a new album. He makes fun of himself and still gets rave reviews!
by max July 10, 2005
Something that was once very popular or cool, i.e. the shit, but has since gone out of style. Often used sarcastically.
Did you see Dave's new pair of overalls and Hypercolor T-shirt? They're the shat!
by Robert J June 18, 2006