"dirigibutt" - verb: The action of some grossly obese persons of hovering in high-traffic paths or doorways or other bottlenecks, forcing their more active peers into aggravating evasive manoeuvers and the utterance of endless iterations of the somewhat acerbic and ironic "excuse me". noun: Any such obese person egaged in dirigibutting. See also: "tonweight"
"dirigiboat" - verb: The action of some motorists of operating excessively large and slow-moving sedans or SUVs in the fast lane or on no-pass areas, forcing their more active peers to ludicrously reduced speeds and the utterance of endless iterations of blistering blasphemies without let or count. noun: Any such large, slow-moving behemoth. See also: "bluehair"
"tonweight" - noun: literally - a 2000lb weight; colloquially - any person whose weight can be more sensibly described in significant fractional tonnage rather than pounds.
"bluehair" - noun: The old person (typ: female) driving the dirigiboat ahead of you at fifteen miles below the posted speed limit.
(for some reason, my attempts to submit these have failed)
Hmmm.. that is odd.