When a person is "eating out" a female and spits into the vagina. The female queefs and the spit flies back into the person's face, making a sound similar to that of a goose.
Dude, don't date that chick, she goose quacked me.
When a girl has been fucked so many times that when you go to fuck her, her vagina is destroyed and full of questionable liquid (mostly other guys sperm) so that it’s like a bog
Guy 1: “dude, I heard you hooked up with some bitch last night”
Guy 2: “yea but she’s a slut, it’s was like geese in the bog”