Sirius and Remus were in the great hall one morning, eating breakfast. Remus was reading a particularly good article on the mating habits of Welsh Bowtruckles, and Sirius was chowing down on a bowl of dry cereal.
"Is cereal magnetic?"
Remus gave Sirius an odd look over the top of his article. "No...I'm pretty sure that cereal is not magnetic. Why?"
"Because they are sticking to my spoon."