Have you ever had a night of gaming go off the rails?
I had a 3 hours session turn into a 6-7 hour marathon of gaming. We should have cut it off, but everyone was having too much fun. The players had reached a remote village and were trying to set up a trade agreement. They offended the villagers and the party tried an Indiana Jones style escape to a rope bridge and escape.
The one magic users who could have stopped the villagers with a spell instead flew to the bridge with axe. He was prepared to cut the bridge after his fellow adventurers made it across. This is when the game exhaustion hit.
All of the players shouted “Cut it now!” And the magic user complied, trapping everyone on the wrong side of the bridge. Note that it was the players that made the request, their characters obviously were to far away. A little meta-gaming goes a long way when injected into the story.
We ended right there with everyone high-fiving and congratulating each other. Only the player who cut the bridge looked concerned and perplexed.
At the start of the next session, everyone was sheepish. With a little sleep, they realized the implications of last session. I started the next session with the characters toweling off from their heroic leap to into the river and swim to safety.
Sometimes, you just have to end with a gag to keep the fun alive. Die rolling and tactics are great, but a story sometimes has to jump to stay alive.