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1.
Short for effeminate. Males that have the mannerisms of a female. They are often thin, have high voices and wear tight clothing. They also often have many female friends, yet don't want to date them. Many people question if they are homosexual.
Adina was hanging with some guys from Queens College whose voices were high and pants tight, they must be efems.
by SmoothJB March 18, 2010