your mother wanted to pull a prank on your father Konig by getting a fake knife and give it to you.and she wanted too because she wanted to get revenge on Konig for stealing you from her.and since you were a baby you don’t remember or know much.and your siblings just wanted to see the prank and keep it a secret since your dad Konig is overprotective

one day ,while your dad was in the kitchen just making dinner.your mom was putting you in your baby walker in the hallway and she grab a fake knife which is made from rubber and look at like actual knife. She go sat in the dinner table while your siblings watch from the living room ready to see Konig reaction