Dorsal Fin

The extremely large protruberence which preceeds an "Evil Fat Man" upon entering a room, attempting a menage a trois, or just generally walking around.

See also, Beer Gut, Dunlop Disease, or Spare Tire.
"Damn, did you see the Dorsal Fin on that Evil Fat Man?!?"
by T&E August 16, 2005
Get the Dorsal Fin mug.