New Jersey Napkin
A wife beater which, while at a barbecue, the wearer takes off and proceeds to use as a napkin in order to remove the excess barbecue sauce from his or her face. The wife beater can also be used to clean up other substances, such as whiskey, blood, urine, or raw meat juice.
"Wow, I would really look like a scum bag if I didn't have my New Jersey napkin to wipe all this shit off my face!"