When you are promised sex at noon, but you don't actually get it until more like 8 pm.
Dude 1: How was your nooner today?

Dude 2: Dude, it was totally FedSex, I'm not getting laid until tonight...
by seeker0075 February 13, 2010
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For when you really need it over night.
Dude I haven't been laid in weeks, I really need some Fedsex.
by alteclansing00 April 3, 2010
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