Someone who is one of more of the following:
fat, ridiculous, rude, big, toadish, grumpy,
ill-mannered, rude, a stick in the
mud, always in the way
Just picture a fat grumpy old woman with a huge rear end who is frowning awfully at you from across the room, while wearing a housedress as big as a house, with her hair going every which way, and either
glasses or warts or too much makeup, or all three.