When fictive in a system (DID,OSDD) has memories of those from the character they were based off. If the character a fictive is based off is a villian or has done bad things, the person may have memories of that despite not actually experiencing themselves, and these are called exomemories.

Note: even though exomemories are not from real events they are still real memories and may even be traumatic to the person.

When someone goes to the gym and spends 90% of the time on their phones scrolling through social media