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.
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 11, 2008