Me: Hey, do you wanna hear a joke?
Friend: Sure.
Me: Why don't churches have WiFi?
Friend: Why?
Me: They can't compete with an invisible force that actually works.
Listen up, buttercup. The joke is about how churches don't have WiFi because they can't compete with "an invisible force that actually works." The joke implies that WiFi is more effective and reliable than the "invisible force" of religion/God, which the church promotes. Essentially, it's saying people find WiFi more useful than faith. Do you need a nap, sweetie?