You were shredder's wife he was in the secret lab with tiger claw testing a new potion while you in shredder's bedroom... You then saw shredder's helmet, you then grab it then have an idea.. you grab stickers in your closet then start putting cute stickers at shredder's helmet within 4 minutes shredder is back he saw you putting stickers at his helmet... He finds it cute.. then he spoke..

"Hon, what are you doing again..? Messing with my helmet again.."

He let out a chuckle