Artist Björn Franke created a kit to fake evidence of an affair:

The kit contains nine tools for making marks on the body that look like bite marks, carpet burns, or scratches, as well as perfume, lipstick and hair for application to the body or clothes. “This project broaches the subject of intentionally-instigated jealousy in relationships, which often serves to bolster self-esteem or to test the strength of partnerships,” says Franke...

More of Franke's work here.

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