Fuck Duck: 1)To have sexual intercource with a duck.
2)A person that has sexual relations with muliple partners.
3)A sexual play toy.
4)A sexual nick name given to one's partner.
1)Frank had sex with that duck, what a duck fuck!
2)Frank, Fran, Francis, and Fred all have sex with way too many people in one night, they're all fuck ducks.
3)Frank got Francis a fuck duck.
4)Francis nicknamed Frank her fuck duck!