Justin Gaethje says he only celebrates with a backflip after a knockout 🔥🤸♂️ “It’s pretty much my rule: if I knock somebody out, then the rush of emotions is too much, where I have to flip off something. But if you don’t get that knockout, there really isn’t a spike of emotion. So I’m sure to do a backflip on the White House lawn.” (Via @MarkMcClune )