Top definition
Adding false details to a story to prove a point. "Grover" can be replaced by whomever is using said "Grover Lie".

ie; Grover: Hey, did you know that the earth is flat?

Dan: No its not; its round!

Grover Lie: What are you talking about; my dad tried to sail around the world and fell off the side.
by Mac174 July 10, 2008
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