With songs like "Girl, I'm saying girl, girl" and "Package 4-U" Mumtown rocked the late 90's.

The usually super serious group Mumford & Sons, proved they have a pretty great sense of humor when they did a fake "Behind The Music" documentary on "Jimmy Kimmel Live" last night.

Their fake boy band "Mumtown" is a very funny parody of boy bands from that era, like "98 Degrees" "Backstreet Boys" and of course, "N'Sync"

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