Top Definition
n. (flake-a-sore-us-rex) a. Someone who is unreliable and never does what they say they are going to do.
b. The biggest flake you know.
Tim: Hey, John, I thought you said you were coming.

John: No, dude, I have to wash my dog.

Tim: You're such a flakasaurus rex.
#flake #liar #unreliable #flakeasaurus rex #bail whale
by -Angel- July 15, 2011
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