First, it is possible that parasperm have no adaptive function. Most consider this unlikely given the large number of parasperm produced (parasperm may make up half of an ejaculate) and the presumed costs of their production.

As People marry now, and ſettle; / Fierce Love abates his uſual Mettle: …

Calvin Thrust is quietly rumored to have on the shaft of his formerly professional porn-cartridge-performer's Unit a tattoo that displays the magiscule initials CT when the Unit is flaccid and the full name CALVIN THRUST when hyperemic.

We have conviction from reason, or decisions from the inerrable and requisite conditions of sense.