What does my dream mean?

I had a dream that i was at a marina that my grandpa used to own. i was standing on the docks and all of these little boys were swimming in the water and i was watching them. All of the sudden, a bunch of drunk people in their 20's were about to take off really fast and i noticed that two of the little boys were riding in between the boat and a metal bar connected to the boat. I told them to get out of it so they wouldnt get hurt. One of them got out of it and the other one got stuck by his neck so i could only see his head. I kept yelling at the people on the boat so i could tell them to wait for the littleboy to get out but they wouldn't listen and they sped of and the little boy was beheaded by a saw that came out of the back of the boat and his head flew across the water....i saw his head floating and all i could do was stand there, shocked. All of the other little boys got out of the water then i noticed another head, it was the guy off of that show The Mentalist..Cho..or whatever his name is...idk it was really weird and i woke up almost crying. What does it mean!?!?