Puff

There was a mighty jet of steam coming out of somebody's central heating vent & I thought "I could blip that.". Cue rummaging about in my rucksack in search of the camera that was sitting on the table at home, followed by some faffing about with the iPhone which wanted to focus on everything and anything apart from said steam. By which time the jet had become a gentle puff. And then it quietly expired.