A Salad Train
A Salad Train is when guys get on their hands and knees and make a train of butts. They stick their tongues up each other's butts while saying 'choo choo,' and the guy who gets the hardest boner gets to pick the next person to join the train.
The Salad Train happened at my brother's wedding. He got married to a guy he met in the train.
At the bus stop, the Salad Train started. The bus driver thought it was a prank.
The Salad Train happened during a football game. No one scored, but everyone got a sore tongue.