peter and a lost cake

My mom bought a cake for one of my siblings and it was pretty big so when she checked out they put the cake under the shopping cart. When my mom got home she realized she had left the cake under the shopping cart and told Peter about it. Convinced it was their fault for putting the cake in such a stupid place, Peter decided he would take care of the situation. Peter went to Randall’s and told them what had happened.
“Sorry, sir. We haven’t found any shopping carts in the parking lot with cake in them.”
“You can’t be f*cking serious, who the hell would steal a birthday cake with someone else’s name on it?”
“We don’t know that anyone stole it, we just know that a cake in the parking lot hasn’t been found.”
“Well what am I supposed to do now? It’s not my fault someone put the cake in a stupid place!”
“I’m sure the bakery can prepare you another one.”
“Forget it! We don’t want another cake from your bakery! We’ll never buy another cake here again!”
Peter went home and proudly told my mom that he “chewed out” those people at Randall’s.
“Peter, you can’t be serious.”
“Yup! I let them have it.”
“Peter, I bought the cake at target.”