A person who exits their car at the grocery store and takes an overly cautiously arcing route through the parking lot in order to avoid COVID infected fellow shoppers only to realize, upon reaching the entrance, that their mask is still hanging from their rear view mirror.
Don't worry kids. Daddy will be back in two minutes to get his mask. He's an habitual boomerang shopper.
A gift whose value or benefit accrues as much or more to the giver as the recipient. Examples: You give your partner season tickets knowing full well that you will always go together. Or you give a woman beautiful lingerie that you will appreciate as much as she. Or you take a date to dinner at a restaurant you both enjoy.
"The next present was obviously a boomerang gift, but that's all right. I wanted it anyway."