MIG meaning Michael Is GAY is referring to when someone makes a michael phan comment(dumb vietnamese singer). You spray your hands in the air as seeing a MIG plane saying "MIG fighter pew pew" in the air to sneak the word in.

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.