1. A person whose face is "monged" i.e. a very weird looking person.
2. A website that shows a man inserting a telephone into his anus. A grossout website similar in content to websites such as meatspin and lemonparty.
Moonface usually occurs when an individual has been smoking weed. Moonface often leads to mad hysterics, causing everyone on the bus to look at you. Characteristics of moonface are prominent cheeks, small slanted eyes, a massive stupid grin, and faceache.