Mother's Day Surprise - S5.E19

It is nearing Mother's Day in the city and Marco decides that he should throw his mom a fiesta complete with a homemade piñata. He and George try to build one out of papier-mâché but Marco forgets it takes days for it to dry. Then George decides that they can build one out of empty food containers. But Marco and George have trouble trying to get a piñata that is shaped like a donkey.