"This is a yukkuri before ejaculation. The peni-peni is completely erect."
"Yukkuri semen is sweet; the form and taste very closely resembles condensed milk. The semen is mixed with the bodily paste to form the semen paste. There are many who enjoy the taste of the yukkuri semen-paste."
"After ejaculation, the peni-peni returns inside the body."
(Not sure about this one)
"The peni-peni is the same as the birth-canal (?), the elasticity and stretchability are superb."