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a man or women who likes penis up their nose
last night she begged me to give it to her up her nose cos she's a duck beak
by X8 dictionary May 19, 2011
A duck beak is an extreme camel-toe.

If you want someone to know, discreetly, that they're rocking the duck beak, make a duck beak motion with your hands, like you're quacking.
Pavel: Damn, that girl has a huge duck beak
Damian: Wow, maybe she'll fix it if I quack my hands at her
by hamgurl February 05, 2013