I Broke My Brother's Stupid Prize Duck... Sort Of?

So yesterday, my little brother got this really annoying rubber duck at school and started showing it off to everyone like it was the greatest thing ever. It drove me nuts all day long. I mean, why is he so happy about a stupid plastic toy? Anyway, after dinner, I couldn't take it anymore... so when he left his room with the duck on his desk, I decided to move it somewhere safe, you know? But then my mom called out that she wanted me to clean up my room. In the chaos of trying to do that quickly, I accidentally knocked over a vase filled with fake flowers... and guess who was sitting right there under the shelf? Yep, that stupid duck got squished flat against the wall. Now it's all stuck and I have no idea how to fix it or tell him without getting in trouble. Why couldn't he just be happy about something else for once? ...