Dolichophallus, meaning "long penis", is the scientific name given to the banana slug. As you may have guessed, it is branded such due to the mollusc's male genitalia, which can measure the length of its entire body. This might seem like an advantage, given certain pressures and insecurities faced by human men in the romance department, but what you might learn from the banana slug is that size is most definitely not everything.
Slugs are hermaphrodites – they have both male and female sex organs. A pair will find each other by tasting slimy residue left behind one another in tracks on the ground. They begin their courtship by moving into a sort of heart-shaped position, nibbling one another's bodies in the process. Then both their penises (they are hermaphrodites, after all) spring out through pores on top of their heads. Intercourse may last for hours.
After several hours of copulation, a banana slug withdraws its male sex organs – or at least it tries to. Often a larger slug will get its genitals stuck. The receiving individual assists them by chewing it off. Once the organs are torn away, the emasculated slug slides off, a fraction of its former glory.