A gay male who will only be the giver (see top) in anal sex, never the receiver (bottom). Usually never perform oral sex on other men, they only like to receive.

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.