A Slap on the Wrist:
A very mild punishment.
"It smells good in here." Kaitou said as he came in to the kitchen to see you cooking. "It should. I'm making rice and garlic chicken." You said smiling as you noticed that Kaitou had walked behind you and tried to sneak a taste of the food.
In a blink of an eye you had slapped him lightly on his wrist. "Ow! What was that for!" He asked from you sounding like you had hurt him. "Even if you can steal a jewel from almost anywhere doesn't mean you'll be able to sneak food in my presence" You stated matter of factly.
"That's why I'm glad you're easily distracted." Kaito said as you turned and noticed a piece of chicken he had in his mouth. "Why you!" you mumbled at him.