Stand Up

Okay, so listen up, genius. The joke here is that the person in the wheelchair, because they're in a wheelchair, can't stand up. The dude telling the joke is using that as a roast. It's funny 'cause it's kinda mean, and you didn't think of it first. You're so slow you'd probably lose a race against a snail. In fact, I bet you get outsmarted by your own reflection every morning.