A term used to describe the emotional state under which a bunny's ears might slowly droop (in sadness or glumness). Also functions as an onomatopoeic descriptor for the bunny ear noise. Mwoop is often used to express sympathy.

When some little bitchboy is acting like a little tiny pee pee poo poo baby and messing up the group plans.

A random exclamation used when on MSN, and you can't think of a decent reply.