One man is placed on a mattress with his head towards the edge during a threesome. The woman lies down on the man in the 69 position. The second man then mounts the woman from behind, in a standing dog-style position. This mimics the uninhibited orgy and feeding frenzy that sharks experience when they converge on a whale carcass. The standing man is also at risk of having his bottom man chomped on by the top man. Anal sex reduces the chance of the top man's balls hitting the bottom man's forehead but increases the likelihood of santorum dripping onto the bottom man’s forehead.