You walk into to history class and see Joe and Gary laughing about something. As you go to sit down, Gary calls out to you. "Hey Billy! Who's a good boy! Sit Billy. Sit!"
By this time, you were already sitting down. You turn around, confused. "Knock it off! What's this all about?" you ask them.
"Billy's a doggy! Billy got turned into a doggy!" Joe chanted, mockingly.
"What!? No I'm not!" you shot back. "KNOCK IT OFF! I'm trying to finish my homework!" By this time Mr Jones, the teacher, had started to take notice.
"Here, I'll prove that you're a dog," said Joe. He punched a small hole in the lid of his bottle, and squeezed it so that a little spray of water hit the back of your neck.
"Quit it!" you yelled at them, reaching back to wipe the water off your neck.
"I knew it!" said Gary pointing to your neck. There's a black and white patch where you rubbed the water off!"
"THAT'S ENOUGH! Roared Mr. Jones. "GARY AND JOE, GO TO THE PRINCIPAL'S OFFICE IMMEDIATELY. I WILL NOT PUT UP WITH NONSENSE IN MY CLASS!"
As they left for the principals office, you breathed a sigh of relief and flipped your collar up just in case, because you couldn't see the back of your neck to know if Joe was messing with you or not.