Selfies are dangerous – we all know that. You can shoot yourself in the head, break statues or give away your location to an enemy miltary unit armed with huge bombs. The last one is probably the worst. Normally, ISIS runs a pretty tight social media game but – if the US Army is to be believed – an ISIS fighter slipped up when he posted a selfie, gave away his location and the US Army bombed the building.

The brilliantly named General Hawk Carlisle told Defense Tech: “The guys that were working down out of Hurlburt, they’re combing through social media and they see some moron standing at this command. And in some social media, open forum, bragging about the command and control capabilities for Daesh, ISIL. And these guys go: ‘We got an in.’ So they do some work, long story short, about 22 hours later through that very building, three [Joint Direct Attack Munitions] take that entire building out. It was a post on social media to bombs on target in less than 24 hours."

There are lessons to be learned here – no matter much you're dying to tell your mates how brilliant war is and what a great time you're having, selfies can tell your enemy where you're at. During the Russia-Ukraine conflict a Russian soldier called Alexander Sotkin made headlines when he posted photos that showed up on the Instagram Map as having been taken in Ukrainian territory.

Narcissism never cost so much.