Do goofballs use only michief interactions in your game? Mine do all the time since latest patch. They don't use any other interaction, not even funny ones.
I took out the Personality Please mod tonight and played with a Goofball sim and didn't find it that bad. I never once saw him prank the toilet and I played with his family for quite a few sim days. He was playful a lot but I didn't really see that as an issue.