An Evolutionary Advantage of the Human Glans Penis

To account for the bell- or acorn-shaped glans penis, in 1995 Baker and Bellis put forward their ‘semen-displacement hypothesis’. They argued that existence of penis is indicative a promiscuous phase our evolutionary past, which females would commonly mate with several males rapid succession. within this scenario distinctive shape evolved so as to enable displacement rival males’ semen. The idea there was an influential past has faced powerful criticisms are here briefly reviewed. However, critics semen-displacement hypothesis have not alternative explanation penis. I try redress here, albeit speculatively. suggest may more convincingly texture human