D'OH!!

How foolish must the would-be bombers have felt yesterday when their
bombs failed to detonate? Especially if they'd shouted something
dramatic just before pressing the button.

It amuses me to think of four guys each running up a different road
in London muttering "Fucking Ahmed, can't trust that useless bastard
to do anything".

Unlucky! You're going down in history as the Wile E. Coyote of suicide bombers.

CCTV pictures may reveal them carrying bags marked "ACME Bomb Company". Should have bought return tickets lads....