Usually found on twitter, the mumfamily consists of people (mostly girls) who love mumford and sons so much. They have a mumfsession and deny being stalkers. The singular form is Mumfie. They are all at Least in love with one of the members of mumford and sons and like to chat about their love for said person. They all know that Winston is a sex bomb. They all lurv each other and love finding people who are as mumfesessed as they are.
Person a: have you seen this mumfamily on twitter and or tumblr?
Person b: oh ya they all talk about mumford and sons all day
Persona: can I join
Personb:do you know how sexy mumford and sons are
Person a: yes
Personb; ok you can join