Let me tell you first-hand, keeping your sibling away from your food is a massive challenge, one that takes elaborate plotting and plan-devising to keep it out of their sight. When Alexis gets back from her run and finds her yoghurt gone, again, she catches David dead to rights, eliciting her to call him a "dirty, little raccoon" in her patented sing-song Alexis accent. However, it's a two-way street, as we later see Alexis picking through David's cake, leaving behind icing like a person "raised in a barnyard."