A sexual act in which a couple wearing life vests preforms a standing 69 while diving into a swimming pool. Once submerged, the life jackets will cause the couple to shoot up towards the surface and jump out of the water similar to the animal of the same name.
(On phone) Fred: "Hey, Daphne, I'm sorry, but I'm going to be a little late coming home tonight as the circle jerk is lasting longer than we expected. Hows about I make it up to you by taking you down to the water park tomorrow? We can try the Bottlenose Dolphin!"
Daphne: Oh gee, that sounds swell, Fred. Don't worry about me. Velma and I have been wanting to try scissoring again, but we just couldn't find the time! This will work out quite well for both of us. I'll call her up now!"