Clop, clop, bang, bang, clop, clop...

...is the classic Amish drive-by shooting joke.
But with this suicide bombing in Afghanistan using a bicycle:

NATO troops were handing out pens and notebooks to a crowd of children in the Panjwayi district of Kandahar at around 0930 local time (0500 GMT) when an attacker on a bicycle detonated explosives strapped to his body.
Mohammed Karim, a bystander, said: "There was a crowd of kids laughing and shouting, ’Give me one, give me one’. At this time a man riding on a bicycle approached the crowd and detonated in the crowd.
"With the explosion, all the shouting of kids was ended and you could hear cries and people running to all sides. Some of the wounded were also running," he said.
The Taliban claimed responsibility for the attack.

...we're going to have to change the joke to:
Whir, whir, boom

A bicycle? Using a bicycle and wounding two dozen Afghani children just to get a few far-from-home Canadian soldiers?
Colonel Kurtz said, of a similar enemy:
"And then I realized, like I was shot, like I was shot with a diamond, a diamond bullet right through my forehead. And I thought, my God, the genius of that, the genius, the will to do that. Perfect, genuine, complete, crystalline, pure. Then I realized. They were stronger than we, because they could stand it.
These were not monsters. They were men, trained cadres, these men who fought with their hearts, who had families, who have children, who are filled with love. But they have the strength, the strength to do that. If I had ten divisions of such men, then our troubles here would be over very quickly. You have to have men who are moral, and at the same time who are able to utilize their primordial instincts to kill without feeling, without passion, without judgment. Because it’s judgment that defeats us."

When will we wake up and deal (without feeling, without passion, without judgment) with, as Kurtz also said, the horror, the horror...