Adj.
When your thoughts run wild and you start thinking so many thoughts while you're unaware, that if you were to become aware of those thoughts, you would find them quite silly.
Person 1: "I'm sorry, I stopped listening to what you were saying halfway through, could you repeat that?"
Person 2: "What do you mean you stopped listening halfway through? Why would you just stop listening to me?"
Person 1: "I was Rayjay man. Just starting thinking about that girl that walked behind you, then I saw a squirrel jump onto the roof and then I started thinking about what it would be like to be a squirrel instead of a human... Total Rayjay moment. My bad"