2 definitions by facegoogle

Top Definition
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
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 28, 2013

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