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!"