1] A female that is so dirty that, upon viewing her, one imagines her vagina contains and makes its own yogurt.
2] Nickname for Monica. That bitch is gross!
Bergies girlfriend was so nasty that all the l337 peeps named that shit yogurt cave.
person1: Oh my god i would so hit that!
person2: Ew man that shit is nasty!
person1: Fuck no dude!
person2: Man it looks like her vagina is full of yogurt!
person1: LAWL! Yogurt Cave?
person2: str8 up!