A fridgilante is a person in your
office or other place of employment who, being fed up with all of the
old food items that have been accumulating in the
fridge and cluttering it up (some of which might still be good), throws them out. This can be done with or without warning.
"Hey! Where's the
sandwich I left in here last week?"
"...looks
like a fridgilante took matters into his/her own hands"
ADJECTIVE: Fridgilante justice is the only way to keep our
work fridge from overflowing with old, spoiled crap.