Noun - A chintuplet is a person who pocesses subcutaneous fat around the neck that sags and creates wrinkles, making the owner appear to have multiple chins. It is most common on people who are morbedly obese. It is more visible when the bottom jaw is lowered or the head is tilted down.
Damn, your girl really let go of herself after you got married. Shes a chintuplet now!