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.
1. Look at JoeCole, he is a mongface.
2. That man is performing a mongface ritual with the telephone reciever.
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi