Top definition
The setting on a Sleep Number® Bed used for fucking.Usually a much higher number than used for sleeping.
My sleep number is 35 and the wife's is 55 but our fuck number is a firm 85.
by wolfbait51 May 17, 2011
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2
according to Katt Williams, a fuck number is the number of times it takes to hump a girl before a guy cums. Can be determined by jacking off and counting. For a girl, it is determined by the number of times she gets pounded before she has an orgasm.
"Dude my fuck number is 130... i takes me a long as time before I finished"

"Haha man i make it quick. i keep mines at 34!"
by Eurochris2 January 04, 2009
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