If someone has dodged a bullet, they have successfully avoided a very serious problem.

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.

The feeling after seeing that your bitchy ex-girlfriend has aged poorly, is obese or looks generally bad after some years.

To get yourself out of a sticky situation. A close call.