Metal arms are the greatest appendages known to man, slightly ahead of the penis, and infinitely ahead of metal legs. They are objects somewhat like Arms(like Doc oc), but not really. Along with being much cooler to look at, they offer many advantages over normal Arms. Such as the ability to kill anyone with just one push. They were first used by William James, an American philosopher who believed in a Metal God. That is, a god who listened to Metal, had groupies, got incredibly drunk every night and exploded on stage while playing the drums. This was the inspiration for large parts of the parody metal band Spinal Tap. The band was originally called Ironica, then Tapster, but both names were the subject of "Cease and Desist" letters from Lars Ulrich's lawyers.