That question from earlier made me think of this.
If one of our boys comes to me on the verge of tears and says, “I bonked my elbow!” I check out the injury and say something like, “Well, it seems okay, so… oh, wait a minute. Okay, I see. Yeah, this is going to have to come off.” Then, I pretend to try and pull their arm off.
I put a lot of effort into it, grunting and gritting my teeth, sometimes dangling them upside down. Then, I look for the “release switch,” which invariably resides under the armpit. When they’re squealing with laughter, I stop and say, “Well, I can’t get it to come off. Think you’ll be okay?” They always say yes.
I have yet to try this tactic on a serious injury.