Consider: Jason hides food. It’s a holdover habit from when he was little, and it really threw Bruce for a loop when Jason first showed up because 

• Jason always has food on his person
  
• He’s perfectly willing to share. Every time Bruce says he’s hungry, Jason starts pulling fruit snack packages out of his shoes and ???? They are at a gala?? Food is provided??
• Why are there slim jims taped to the supply closet walls
• Didn’t Alfred just buy potato chips
• The potato chips are in the laundry hamper
• Okay
• Alfred and Bruce find food hidden around the manor for years after Jason died, and it’s not fun for anyone involved

But! Jason’s back now, and the chaos continues because he’s still doing it, he still hides food

• Anywhere he frequents, including places that don’t belong to him
  
• Jason: [pulls an entire bag of kitkats from underneath a chair]
• Tim, owner of the chair and surrounding property: what
• Because Jason still remembers where he hid snacks in his youth, he has the magically ability to pull five-year-old packages of crackers out of the manor floors
• Sometimes his siblings actively search for stashes– they know they exist– but they rarely find anything on purpose. More frequently, hidden food turns up by accident 
• “I’m going to assume the package of jerky in the piano is yours, Todd”
  
• One day shortly after Tim became Robin, he made the mistake of unwittingly eating a package of cashews he found in a living room vase. In front of Bruce. Didn’t end well. 
• Jason still carries a variety of snackfood on his person, most commonly granola bars, fruit snacks, and skittles. He’s still willing to share.