Mirror Age

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Mirror age is when a headmate automatically mirrors the age or ages of others. Their age will automatically be matching everyone around them and when there is several others around they may become polyage automatically, simultaneously being everyone's age at once. Or, they may mirror only one persons age, rapidly switch between them and others, or only ever mirror whoever has their attention or is interacting with them the most. When they are alone they may become agehazy, age dissociated, or a number of other ages, especially non-specific ones but not strictly.

There is no particular reason this may happen, it's just how the headmate happens to function.

Related Terms
Headmates who are mirror age may also consider oneself to be an Age slider due to also never having a constant age.

If you are mirror age you could also possibly be a mirror headmate.