It's quite an image. There was a spoof called THE KENTUCKY FRIED MOVIE (by the guys who later did AIRPLANE!) which had a lengthy take-off on ENTER THE DRAGON. The bad guy fitted a number of weapons into the socket on his arm, but he also was seen with an electric toothbrush and hairdryer in it. We also see him sitting up in bed with a woman and you can imagine the device he had affixed to his arm.