the light, creamy sweat layer that accumulates on a man's testicles when they are in a heated environment, such as tighty-whities or tight sweatpants.

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.