What is the moe moe moe..?

When I was little I remember watching sesame streat with my brother and I dont know why but the tv turned realy bright and it turned blue and so I got realy scared and hid under my table andmy brother stayed in the room with the tv and I heard a loud sound and it sounded like robot talk saying "MOE MOE MOE" and it was a scary Blue X&O together and it like ran to the back yard because we left our back door open for our cat and when I went to see my brother he was sitting on the couch scared and I looked at the tv and it was steaming and the steam cleared and big bird was helping alen find missing letters from a store and we told our parents and they dint beleve us and I just wanted to know why that happend and is it somthing I have to worry about but now im 16 and I went to my back yard and I do remember my grandpa went out side to see what we where talking about and the sewer door thingy was lifted up and I just freaked. And I want to know if anybody has had the same expirience or somthing simmular to it.