Problem Child

Problem Child is a 1990 Dennis Dugan movie about a kid named Junior who keeps getting transferred from one adoptive parent's house or orphanage to another because of all the pranks and trouble he causes. In this movie, he is finally adopted by a couple (the Healy's) who are unaware of his capacity for causing mayhem.

In one memorable scene, Junior is assigned the task of refilling a lemonade container and walks off and fills the container with his own urine.

It featured John Ritter as Ben Healy, Michael Richards as Martin Beck, and Michael Oliver as Junior. There were 2 sequels.