You shouldn't share certain things with other people.
James' best friend is staying at his house for a sleepover and forget his toothbrush.
James wants to help his friend brush his teeth.
James tells his friend to order a new toothbrush from Amazon with 2-hour Prime delivery.
James tells his friend that he can use James' toothbrush for that night.
James' friend orders a new toothbrush, and they continue enjoying the sleepover.
James' friend calls him gross and insists on being driven home to get his toothbrush.