Several people, one of which doesn’t mind getting wet.
This can be done with a cabin of children or with a group staff. One person is a teacher.
The teacher walks into the classroom and the bell rings(someone can make this sound)”Where are my students?”
The students begin to slowly enter the room. They can be different stereotypes.( Preppy, jock, goth etc.) But each of the students tell the teacher they were tossing pebbles in the lake.The teacher tells them to open their books to a certain page and read
Finally, The last student comes in, drenched.The students giggle
Teacher: Let me guess, you were tossing pebbles in the lake.
The student shakes head and says: I am Pebbles