I had been killed three times by a helicopter and eventually got in to a position where it was facing away and I had a rocket launcher right up its ass. In a movie this would be where the music stopped and the hero would come out with a stupid line like "rest in pieces" or "sayonara sucker". I pulled the trigger, but instead of a majestic explosion a random did a knee slide and stabbed me in the bollo##s a fraction of a second before I fired and I landed in a heap .
The anti climax and surprise had me literally belly laughing for about five minutes, it was such a pathetic effort on my part I could only see the humour in it.