That person that borrows something from you and fails to return said object to you. when you ask them about the object, they say that they lost it or left it at home even though you know that they have said object on them
I lended my pencil to my friend, RJ, but she never gave it back and when I asked about it, she said that she had lost it even though she was using it. That fruitloop dingus is such a klepto!!!