Fucktuate Share definition Flag 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? Fucktuate by Drim498 July 17, 2010 0 0 Get merch Get the Fucktuate mug. Buy Now — $32.95 See more merch