Tutorial ,,Duping Glitch‘‘ (Credits in the Description)

The glitch works Like This: First You Drop the item in Front of you, Second stepmis dranging it into the third slot (if you had it in the second slot) and Holding the item over the slot. Last thing is to Walk into the item and still Drag the First item over the third slot. If you don’t understand that, then im sorry, that I can’t explain it properly.