F12 Moment
When something awesome or stupid happens in a game from Steam, and you hit F12 so hard you probably broke your keyboard just to save it for posterity.
My friend died in a fire, and I F12'd it because it was the most beautiful death I've ever seen.
I saw a dragon fart, and I hit F12 so fast my hand was on fire.
My brother got killed by a goat, and I took a screenshot like it was the final boss.