Sometimes when you're at a party and the right song comes on (AKA "your jam", girl) you can't hold back. You have to go for it. And sometimes when that happens you're an old dude with crutches and you just gotta be like, "See you later, crutches. You're holding me back from blowing the minds of everyone here!" And then sometimes you're sitting at your computer and you see a video of that moment with the old man and you set that video to Lil Jon's Turn Down for What because you can't not do that no matter how hard you try. This is that moment.
By the by, that bag hanging from his belt was loaded with extra funk.