when you fluctuate sexual positions, from ok, to great, then back to ok again, usually within the span of about 5 minutes.
Man, i'm getting tired of the old positions, you wanna fucktuate tonight?
by Drim498 July 17, 2010
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Shawna had a fucktuation when she banged her knee on the counter.
by BBBBBBBBDDDDAAAA November 3, 2012
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to fluctuate between sexual partners
She tends to fucktuate between 4 or 5 people a month.
by Yossarian420 July 23, 2008
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Similar to the word fluctuate, except in a sexual matter. Meaning when your performance in the bed is not as good one night as the last. When your performance fluctuates.
Girl: You were terrible last night!
Guy: I know, I fucktuated from the night before.
Girl 2: I can account for that!
by drfghj April 27, 2009
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A variant on the word "fluctuation", commonly used in the world of economics to identify irregular/varying market movements. However, this term is used specifically in reference to sexual targets of one's liking. In other words, "fucktuation," defines the irregular change in taste of men and/or women when put into a sexual connotation.
1) "Yea, seems like Clinton has taken a liking towards younger girls now."
"I dunno man...he used to date older women, maybe he's going through a fucktuation."

2) "Yo bro, should I go for the younger or older chick tonight? I can't decide dude..."
" Make up your fucking mind and stop fucking fucktuating."
by Andrew Lui May 22, 2008
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She slept with him, him, him and him, all in 2 days

Man! Shes been fucktuating!
by Cazzahh September 25, 2008
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(fuck-shoo-ate) v. to have multiple sexual repeat partners; to fluctuate between fuck buddies; a conjunction of "fuck" and "fluctuate."
A: Have you met, Erin, the new girl?
B: Yeah... She likes to fucktuate between the football and lacrosse team.
A: Seriously?! What a slut!
by CWU_gal October 22, 2013
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