A person who lies unnecessarily.
Kat- "Oi, did you move my pen?"
Imi- "Er Nah!"
(Kat remembers that Imi did because she saw)
Kat- "Oh wait you did because I saw you actually"

Imi- "NO I DIDN'T"
Kat- "LOL. Ok but I saw you, chill out!"

Imi- "I SAID I DIDN'T OK! GOOOOSH WHY WOULD I SAY I DIDN'T IF I DIDN'T THOOUGH!"

(Imi storms out of the room)

(Kat looks very confused and worried.!)
Kat- "What an Imogen Liar!"
by Melissa & Francesca January 28, 2008
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