A Peniser is a chronic and dedicatedMasturbator. Most Penisers penis their penis for hours at a time and are very proud of being Masturbators.
Steve: I know Tony is a Peniser.
Rick: How do you know?
Steve: I saw him penising himself all day on Chaturbateyesterday.
Rick: Wow, I would have never guessed, he seems like such a nice guy