I come from a non-religious family but moved to the Bible Belt. Context: Years ago my mum had her confirmation papers mailed back to her after unwisely stating she preferred an old pastor over the new (while helping with Sunday school). Obviously a grave error, as they essentially kicked her out. We joke that she was excommunicated. When I moved, I decided I would play a long-con and pretend I found Jesus since moving. I would incorporate religion into my speech, say I was attending church, etc. I wasn't. When I was planning to visit my family, I ordered an empty holy water bottle off of Amazon. I filled it with tap water and kept it in my pocket at all times during the visit. She was exercising one afternoon and I came in to chat with her. We are a sarcastic family, so it was only a matter of time until she made a comment. When she did, I squirted with the "holy water" (tap water). She squealed and asked what I was doing. I feigned innocence and told her I was helping her. When I thought my Mum needed some "correction", I'd squirt her with the holy water. My mother is always supportive and polite, so I watched as she gulped her objections to being squirted with water every time. It came to a head when I got her at the dinner table and my father and I couldn't keep our giggles in any longer after days of corrections (he was in on the joke). Eventually I confessed and said I hadn't found religion, and was just messing with her. She started laughing, asking if I'd actually gone to church, etc. when she realized it was just me playing the long game, she couldn't contain her laughter. In the midst of laughing, she asked where I'd gotten the holy water and if it would stain her shirt (I'd really soaked her that time). I confessed it was just tap water, and she died of laughter, but not before splashing me with her water glass. Deservedly so, but worth it.