that would be Dead Skin Mask by Slayer
A song about Ed Gein.
The child's voice at the end says:
Mr. Gein? I don't wanna play anymore Mr. Gein.
Mr. Gein, its not any fun anymore.
I don't want to play anymore Mr. Gein.
Mr. Gein? lemme out of here Mr. Gein.
lemme out, lemmmmeee oouuuuuuttt!!