A local tradition amongst college students in villages of rural Montana where they congregate to cut animals they have hunted such as game and fowl while drinking beer and being quintessential "men"

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.

at a party where there is many guys and only a few girls

Basically this is a small suasage festival only 3 to 6 guys, as where a suasage fest is 7 or more guys