Schlong is a slang term that refers to a man's penis. Although it is considered to be a vulgar term, there are other synonyms that are used as euphemisms to avoid using it in polite conversation. Some of these alternative words include trouser snake, sausage, joystick, wang, peter, member, dong, and cock. These words are all used to describe the same body part and are often used in a joking or casual manner. While there are many slang words for the male genitalia, it is important to remember that using these words in public, or in front of people who may be offended, is generally not appropriate.