Why are we all saying :0

pls watch i listen to lets not media... they made the hary potter raps here some links to watch/listen to the vids: https://www.youtube.com/watch?v=Yn_uHvb5vPQ&list=TLPQMDExMDIwMjDLMy5Lz08-Ag&index=9 https://www.youtube.com/watch?v=hKtwmkBVblM&list=TLPQMDExMDIwMjDLMy5Lz08-Ag&index=1 and random things: https://www.youtube.com/watch?v=IdoD2147Fik&list=TLPQMDExMDIwMjDLMy5Lz08-Ag&index=2 https://www.youtube.com/watch?v=Zm1y0mG3Q4o&list=TLPQMDExMDIwMjDLMy5Lz08-Ag&index=4 https://www.youtube.com/watch?v=TqTHmzMk0Cw&list=TLPQMDExMDIwMjDLMy5Lz08-Ag&index=6 https://www.youtube.com/watch?v=GI4NvFzeC8o&list=TLPQMDExMDIwMjDLMy5Lz08-Ag&index=7 and my fav...: https://www.youtube.com/watch?v=y57sYHIDP_Y&list=TLPQMDExMDIwMjDLMy5Lz08-Ag&index=8 Thats it!!!