The dragon had had a long, hard day, roaming the land, burning fields and houses, striking fear into all who crossed its path. It had eaten so many humans that day, that upon returning to its lair, it could barely move. It struggled to flap its big, leathery wings. When it eventually managed to get up some momentum, it realised that the hole at the entrance to its cave was far too small to fit its enormous belly through. It sat in the corner and sighed, sending great plumes of flame billowing all around it. No more terrorising villagers today then.