Shopgifting
Basically putting random shit in people's carts when they're not looking in the hopes that they either buy it without realizing it or it's really awkward for them because of what the item is.
Since shoplifting is morally wrong why not give someone something instead by shopgifting
shopgifting
The act of leaving trash or any unwanted items on the shelves at a store instead of throwing them away or returning them. A common thing that happens at Walmart.
"I caught a guy shopgifting, he left a Starbucks cup in the toilet paper aisle."