What is a penjamin?

A "penjamin" is a slang term, primarily used online, referring to the male genitalia, specifically the penis. It's often used in a humorous or vulgar context, and frequently employed in memes and online jokes. The term isn't considered formal or appropriate for professional settings. Its usage often aligns with other slang terms for the penis. Using the term often relies on the context it is used in, either to be offensive or a joke.