Humor. The pro speakers will tell you: “Only use humor if you want to make money.” I think we can modify that to be: “Only use humor if you want to connect with your audience.” Humor can dissolve just about any border and help you and your audience join together in a meaningful and maybe even fun experience.
Creating humor with PowerPoint can be as simple as a setup line followed by a slide to complete the punch line. I use this image in my workshops as a quick example that humor in PowerPoint need not be complex. Sometimes it just takes a silly setup and a silly picture.
Beware of cultural and geographic sensitivities but, what the heck, give it a try!