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A bff with benefits is when your best girl friend forever is also your lesbian lover.
My bff with benefits is the hottest MILF I know.

My bff with benefits and I leave our husbands at home with the kids when we go out for dinner. After eating and a few drinks we move the car booster-seats to have sex before we get back to our homes.
by CyAdora October 21, 2010
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