Worse than that, if the going is soft underfoot (highly likely in a rainy English summer), you would probably end up sinking back so far past vertical that you collapse over backwards, your stilettos catapulting a muddy divot of turf into each of his eyes, thereby mortally offending both the clergyman and the groundskeeper.

Though it could prove the perfect distraction to allow one of your family to commit the murder themselves and make their escape, thereby ensuring a fully scripted garden party for all.