It's that thing when a guy from Wyoming simply reaches around and firmly grasps a girls boobs (or another mans pecs) and gently massages them like he would an old cows' tired udder.

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.