I am ashamed to say this, as everyone has posted such lovely arcane words, but: "ratchet" My younger cousin recently said it to me, in the form of "That's sooo ratchet!" or something. It's a wrench? What are you trying to communicate here? I was super confused, like the old fogey I am (guess that happens upon graduating high school). Someone explained it as basically being a twisted version of "wretched," indicating poor quality. Alrighty then. I'll have to figure out how to adroitly fit my favourite recently learned word into this discussion.
I'm going to have to side with you on this. I've heard it from The Chainsmokers' single #SELFIE and I knew it's some sort of modern slang, but never quite got the finding out the explanation. Now I'm not sure whether to thank you for making me explore the ratchet slang without my consent.
I've never used that word, outside of the "tool." My friend theadvancedapes used to write a blog titled, "The Ratchet." -What was the motivation for the name Cadell? Good word choice goo.