Very similar to the dirty sanchez. The rusty edge is when reminence of feces are left on the penis from anal intercourse representing the rusty edge of a sword. The rusty edge should be used to titty fuck or mark your sexual partner with an 'X'

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.