big pussy
Subject to interpretation, this tag generally refers to the labia or pussy being proportionately larger than average for a character of a given size and species.
Though this tag can be applied to hyper genitalia, it typically refers to a pussy that could still pass for a realistic size, just on the much larger side.
Note that the world record holder of the biggest vagina ever belongs to a Scottish lass named Anna Swan from the XIX th. It was reported to measure 48 cm (19 inches) in circumference, comparable to a small rugby ball.