I guess some faction's martyr didn't show up for work that day heheh wish I could have heard the conversations ("hey, I bet Abdul would do it") and the instructions given to the replacement :D

...police at the scene of one the Baghdad blasts said the bomber appeared to have Down’s Syndrome.

http://news.scotsman.com/latest.cfm?id=4070337

Interestingly eugenic. What else would he (the Down's kid) do in society? This way he contributed to resistance of Judeo-American invaders.