When having sex with a female of quationable scruples from behind in front of a dumpster, slam her over the head with the lid of the dumpster just prior to cumming, so as to get her to tighten up.

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.