A random exclamation used when on MSN, and you can't think of a decent reply.
Person A: So anyway <insert long rant here>
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.
"I feel mwoop today."
V: I missed dinner...