Let's kiss boys, binge and purge, rock n roll!

Libido is a girl in Lisa's mind, along with Jealousy, Honesty and Conscience. She is an eight year old girl who is locked up in a cage.


Lisa reads Marge's book The Harpooned Heart and Marge asks her for the review. Lisa reflects for a while.

Libido tries to get out from the cage and kiss boys. Conscience tells her that she will get out when they are sixteen.


She appears in all episodes because she's in Lisa's mind, but she's only seen once.