Apathy Jack writes:
Student 1 "If I pass English this year, Mister's going to buy me a car."
Student 2 "Really? Sir's going to buy you a car?"
Me "Yeah hold on for a minute there..."
Student 1 "See, last year Mister told me that if I passed English he'd shout me McDonald's, which he did. So if I pass this year, he said he'd buy me a car."
Me "I'm pretty sure that last bit never actually happened."
Student 1 "Alright, but if we both pass this year, you have to shout us dinner at Valentine's."
Student 1 "And if we pass next year you have to take us to dinner at Sky City..."
Me "Sounds fair."
Student 1 "In the car you're buying me."
Me "See you're doing it again..."