This occurs as you carry around a huge turd, looking for a target on which to drop it. The turd, like a bomb, is lethal as it cooks up getting ready for the mission. When it is let go, it is like a bomb from an airplane, headed to the target, destroying the vessel into/onto which it lands.
Jim waited till his girlfriend went into the kitchen to sneak into the bathroom, drop his bowel bomb, and totally destroy the bowl.
The odor of the Jim's bowel bomb, dropped right before dinner, totally destroyed the mood of his date.