the combination of the words 'bro' and 'hombre'. If you don't get it yet, a 'brombre' is a mexican who clearly tries too hard to fit in with his white 'bro' counter parts and dresses as such.

A Bloomer is someone with a bright outlook on life who is optimistic in nature. Bloomer's frolic in every opportunity to be happy and try to make the most out of life. The opposite of a Bloomer is a Doomer. The term Bloomer originated specifically as a counter to the Doomer on sites especially like 4Chan.