The female version of a Dutch oven. When a woman with a fishy smelling private area, whether she knows it or not, puts a partners head under the covers in a bed for oral pleasures.
Man, I was messing around with this girl last night, and when I lifted up the covers to go down she gave me a tunamelt.
When going down on a chick, lapping away, and you discover that it's her time of the month. By no means do you stop though. When the whale spews, tartar sauce with a hint of raspberry smothers your face.