How did he put it on?
http://www.telegraph.co.uk/news/newstopics/howaboutthat/7187012/One-armed-man-hunted-for-stealing-single-cufflink.html
The same way that Bender in Episode 1 of Futurama, put on both of his arms after they fell off. :-)
Or Frank Drebin gets a slap in Naked Gun 2
clever dick?