Kid Cudi let out a message to other people (possibly Bad Boy's latest signee) who use the word "rage" or people who claim to "rage" letting us know that he's the original "rager". Kid Cudi says:

There's only one original Rager, and thats me. I started this 'rage' sh**. The lifestyle, the term, the whole new meaning and definition of the word. Understand and be clear, IAM THE RAGER, IAM FOREVER. When you hear ANYONE talking bout 'rage' or 'raging', know where that !! originated. Guess ima have to do some trademarkin'. EXCEPT NO SUBSTITUTES. WE LIVE THIS SH**!

Check out Machine Gun Kelly's response towards Cudi below.

Source - Rap Dose