DMs, Tell about the shortest encounter ever because of players luck and actions

[DM with a vengence]

4th level party, Fighter, Cleric, Rogue, Sorcerer.

I'm just fooling around with friends, and so the party enters a room with a Great Wyrm Red Dragon, and the doors lock behind them.

Everybody charges, hoping to get off that one lucky hit.
Fighter- Miss
Rogue- Miss
Cleric- Miss
So now it's just the low Str and BAB Sorcerer with his Shortspear. 20, 20, 17.

We spent the rest of the evening rolling up the dragon's treasure.

 

[Kwalish Kid]

In a Vampire game: A couple of PCs drove up to a border guard, looked at the guard, used Dominate, said, "Ignore," and drove on through.