Dreaming in Animal Crossing

I came across this weird feature when I was playing the game and I was decorating my house so I walked in my room and put my bed out and slept on it but the weird thing was is that there were options and one of them said ” should I sleep or lye down and so I chose to sleep so I waited to see on what it was gonna do, then it started getting weird and the screen went purple and pink and it went black and so it took me in this weird place and I was still lying down in bed and next to me there was a person and she turned out to be the guardian of the dream world and the moment was weird and in that feature you can share or have dreams and it looked really cool to me so Ill definitely be trying that one day.