Where did Maniac take Russell and Piper?
Maniac Magee met Russell and Piper McNab when he was staying at Valley Forge. The two brothers told him their plans to run away to Mexico. Wanting to prevent this, Maniac told them that they won a contest and "'were chosen for a free pizza.'" He informed them that they only had 24 hours to claim their prize.
This was mostly a lie. Maniac knew that the boys were too young to be traveling so far away. He also knew that they were hungry and had been eating nothing but snack food. Maniac had recently won a year of free pizzas at Cobble's Corner. He had won this by untying the famous Cobble's Knot. Maniac could not enjoy the pizzas because he was allergic to them. He decided to tempt Russell and Piper with the pizza he could not eat. They agreed to go.
Back in Two Mills, Maniac took the boys to "Cobble's Corner at Hector and Birch." He ordered a large pizza for the hungry boys and showed his certificate which proved he had won free pizza.