Over the last 6+ months, my uBPDh has started full on laughing completely randomly, out of the middle of no where…and no one else around him thinks anything is funny. I have tied it to him doing so when he thinks I am having an affair with a person nearby. We toured a possible preschool for our daughter this morning. As we walked out, there was a man working in the daycare area, clearly I am having an affair with said man, just like the millions of other men that I am clearly having affairs with! We get outside and he says that he will put my daughter into the car and then just about falls over laughing. I asked him what was so funny. He responded nothing, then continued to laugh. I asked him again, he responded nothing again. So I left it. He literally looks crazy. It’s to the point that my d11 says to me, “dad’s making up jokes in his head again” several times a week. Is this just a coping mechanism for his crazy made up stories or what is going on here?
For my BPD daughter, when she starts randomly laughing it's because she's thought something so vile, she knows it's not appropriate to repeat out loud. And she has almost no filter, so if she thinks it's bad, then it's really going to be bad.
I've learned to just let her laugh and not ask, "What's so funny?" It's almost always something perverted and twisted.
My BPD ex wife, on the other hand, would go through phases of being manic and depressed. When she's happy, everything is perfect in the world and she smiles and laughs throughout the day. It's not exactly the scenario you're describing, but this could also be an explanation- he's in a manic mindset and he's so happy because everything is "the best ever".
In either case, or if it's something completely different, your only options are to laugh with him or ignore it. If he's happy, then at least he's not being a jerk....so I'd call that a win.
