1. When something is totally cool in a very non-cool kind of way - like when William Shatner raps about Julius Caesar while wearing a giant gold chain!

2. When someone does something that isn't really cool but they think they are really cool.

3. When someone is cool even if they are not just because they have guts!

4. (Same as above) but especially if it's hilariously not cool!

5. When someone is cool because they are not afraid to make fun of themselves! (best definition!)
Someone comes in with a messed up hair do - but you want them to think that it's cool! --"Dude! that's Phat Like Shatner!"
by markfu November 3, 2010
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