To convince somebody to reneg on a promise that they made, in similar nature to the way the character Fanny Dashwood convinced her husband John to renege on his deathbed promise to his father that he would take care of his half-sisters and their mother in the Jane Austen novel, Sense and Sensibility.
When Mary convinced her boyfriend, Dave, that he couldn't fulfill his promise to attend his friend Nick's bachelor party, she fanny dashed nick.
by Mr Cnowledge September 24, 2015
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When a woman glides her finger along her vaginal gap. Then precedes to wipe along the other persons upper lip.
by Barrytheunicorn October 11, 2019
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Get the fannybasher8592010 mug.rash,friction burns,overused,past its sell by date.a female that shaves her haven and sleeps about causing friction burns from to much sex turns her haven into a fannyrasher
by raztazhellsinki2011 February 22, 2011
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Aaron: "Look at Lewis Knight's eyes, aren't they red"
Me: "Yes, he's well fannyrash-eyes from all that rabbi semen
Aaron: "Look at Lewis Knight's eyes, aren't they red"
Me: "Yes, he's well fannyrash-eyes from all that rabbi semen
by tda.harper January 19, 2008
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