pronounced la-gas-a. Derived from the French term "legess", meaning "to break wind". A lagessie is a very gasesous individual with a chronic flatulation disorder. They are proud of their affliction and tend to share it with anyone possible. Upon a close contact, some are lead to believe the person has gingivitis. This is a misconception, clouded only by the foul order emulating from the lagessie. A lagessie is a very intolerable person.
"Don't listen to him, he is spouting more of his lagessie"