- Checks out - Many great idioms tend to involve an irony that measures the difference between the importance of what is being said against the ephemeral nature of the topic at hand. "Checks out" is no exception, and the joke involved in suggesting that "I researched the offhanded comment you just made thoroughly, and would like add my extremely scientific evaluation of your bon mot to the discussion in order to bolster your argument," gets at least a chuckle if not a literal laugh out loud every time.
Sadly I don't have any other idioms on the radar, I just didn't want 2015 to go by without any posts going on the record. If this blog starts to look like my resume, I'm going to have to hire an archeologist to figure out what the hell I was thinking during the twenty-teens. ("Checks out.")