Top Definition
(noun) Strong and inspirational men who support Movember and are committed to change the face of men's health. Mo Bros register at, grow a moustache for the month of November to raise awareness and funds for men's health issues during the month of November. Mo Bros start Movember 1st clean-shaven, then grow and groom their Mo, for the rest of the month, raising money along the way.
During Movember there are a lot of hot Mo Bros rocking strong moustaches
by Mo Sista Mimi February 03, 2012
Gay best friends.
Are Mitch and David boyfriends?

- No, David's just Mitch's 'mobro.
by dripinwet August 11, 2009

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