When your girlfriend gets spunk all over her knuckles after wanking you off and threatens you in a comical manner with the "spunk knuckle duster".

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.