Rudolph hired Moe to walk his dog every weekday. Rudolph hands Moe a check for a month of excellent work. "Thanks!" says Moe. "This will help me pay for the silly citation I just got from the city, since I never licensed my dog walking business. They make us get licenses just to raise money for the city! What a scam." When Rudolph learns that Moe's business is unlicensed, he refuses to pay. What will result?