2 definitions by facegoogle

F.U.S.S is an acronym for F-un U-nrestrained S-hameless S-ex. to have fun hardcore sex with someone that you will most likely never see again.
"hey babe wanna go back to my place and have F.U.S.S?"
by facegoogle July 14, 2011
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The inability to sleep due to fear. Can be caused by fear of the Dark, Night, and/or being vulnerable. usually occurs when a scary event happens such as an experience or a horror movie.
Person- "The movie Paranormal Activity gave me bad Fearsomnia. i was too scared to go to bed!"
by facegoogle July 29, 2013
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