Reuters | Latest Financial News / Full News Coverage: "Size is usually more of an issue but the shape of the penis is also important because it evolved to dispel other men's semen, according to scientists in the United States.
"They found that the coronal ridge... could scoop out more than 90 percent of the cornstarch mixture (from the artificial vagina) with just one thrust, while a phallus with no coronal ridge only managed to remove 35 percent," New Scientist magazine said on Wednesday."
Yea, that's right, it's my bad-semen shovel.
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