You shouldn't ask someone to give a present back.
Kent gets into a serious fight with a friend after giving them a nice smartwatch as a gift.
Kent wants to own the same smartwatch.
Kent buys another smartwatch like the gifted one and wears it.
Kent asks for the smartwatch back from his friend.
Kent's friend sees him wearing it and is reminded of the gift he was given.
Kent's friend starts to think even less of him.