Definitions by Napalm Tugboat

Mardy Moos 

When a grown adult takes offense to something, usually results in the lowering of the bottom lip, going quite and generally being a big baby. Also known as a "Watkin"

Not being Invited out with the boss for a drink and night out!
Being called Fat gets the mardy moos

Mardy Moos by Napalm Tugboat March 18, 2011