Get the That's boss mug.Used as a way of saying something or someone is stupid, ridiculous, and gay. A form of replacing the word that's gay. When someone says "that's boss" they are referring to something or someone that they do not like
Paul: hey bernard!
Bernard: hey paul
Paul: whatchu doing?
Bernard: doing some Chemistry homework.
Paul: oh, that's boss dude.
Bernard: yea I know, it's so boss.
Bernard: hey paul
Paul: whatchu doing?
Bernard: doing some Chemistry homework.
Paul: oh, that's boss dude.
Bernard: yea I know, it's so boss.
by Sloppybobtango March 25, 2010
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