I think some women on OkCupid employ the same strategy:

“Mantises are large carnivorous insects. [. . .] they will attack almost anything that moves. When they mate, the male cautiously creeps up on the female, mounts her, and copulates. If the female gets the chance, she will eat him, beginning by biting his head off, either as the male is approaching, or immediately after he mounts, or after they separate. It might seem most sensible for her to wait until copulation is over before she starts to eat him. But the loss of the head does not seem to throw the rest of the male’s body off its sexual stride. Indeed, since the insect head is the seat of some inhibitory nerve centres, it is possible that the female improves the male’s sexual performance by eating his head. If so, this is an added benefit.”

—Richard Dawkins, The Selfish Gene, which is best read in its latest edition.

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