I was thinking, chloroform, but now I'm thinking you're on to something. I have just the story:
3 sailors and 3 powerboaters hopped a train for the Annapolis Boat Show.
The powerboaters bought 3 tickets, one for each of them, but the 3 sailors bought only one ticket between themselves. The powerboaters snickered quietly and sat near the sailors so they could watch the sailors get kicked off the train when the ticket inspector came around.
Shortly, the ticket inspector entered the far end of the car and called, “Tickets, please.”
before the inspector got to them, the three sailors jumped into one of the two heads at their end of the train. Soon, however, the train official knocked on the toilet door: “Tickets, please.”
A single hand pushed out the opening of the door and handed the ticket to the inspector. He took it and continued his rounds.
The three powerboaters thought, 'that's brilliant!'
After the boat show, the three powerboaters joined up with the three sailors for the train ride home. This time the powerboaters bought only one ticket between them, just as they had seen the sailors do on the way into Annapolis. Much to the powerboaters' surprise, the sailors didn’t buy even one ticket.
Once the train got rolling out of the station, the powerboaters all jumped into the port side head ahead of both the inspector and the sailors. They wait excitedly to hear the call, “Tickets please.”
One of the sailors watched until the inspector was about halfway to their end of the train while the other two slipped into the starboard side head. The first sailor then walked over to the portside toilet door, rapped, and called, “Tickets, please.”
-Will