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Someone you hang out with because they make you feel thinner and more glamorous than you really are.

Comes from the legend that "I Love Lucy" sidekick Ethel Vance was contractually obligated to remain 20 pounds overweight.
My sister loves to call me when my life's a train wreck. I'm her Ethel-clause friend.
by Traci S. October 09, 2007
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