My son wants me to piss myself

It started a couple weeks ago I'd notice missing panties and bras when I would be changing, showering, or peeing I'd see movement like someone was watching me. First let me describe our situation I am 36 year old mom with an 18 year old son his dad left when I was pregnant so it has always just been me and him my parents are very wealthy so I can be a stay at home mom. We are a very active family so we both stay in good shape. Recently I realized my son is trying to make me pee myself. Now for context I have never peed myself before but have been really close a couple of times with him a lot of them being very recently. I was going through my son's phone last week and I saw hundreds of searches all relating to stuff like how to make a mom pee herself how to make a woman desperate to pee how much pee can the average bladder hold etc. I saw in his recently purchased on amazon diuretics if you don't know what they are they are basically just pills that make you pee more. So now I'm just very confused I love my son even more than a mom should but I don't want to just piss myself in front of him. I just need some advice and help is very appreciated.