A snails penis. Part of the snail language of adding SN to the begining of words.
Damn that snail has a big snenis.
A snails penis. Just as a snails cunt is known as snunt, a snails penis is known as a snenis. These terms are all found in science text books, and are quite funny. It is also part of the snail launguage of adding the letters sn to a word. Included in the text book also.
The snail's snenis spit up on that snail's snunt.