Pranked With Her Stepdad

It was a prank gone wrong, but for me it ended so right. My stepdad and his brothers have had a prank war going for decades. They narrowed it down with some edicts over the years — only prank on April Fool's Day, no one can hide out at home, no pranking spouses or kids, no property damage or risking anyone's job. Otherwise, it's all out war. But when one of the pranks goes a little awry, I'm called in to help my stepdad. Only I get trapped right along with him.
Once I got involved, it broke one of the edicts of the war, but then it's my stepdad and me breaking all the rules.