body double

Short definition from Wiktionary

Noun

1. 1
   A film stand-in for an actor, in scenes not involving the face, especially during scenes of nudity, or of dangerous activity.
2. 2
   A political decoy; a person employed to impersonate a politician, in order to draw attention away from the real person or to take risks on their behalf.
3. 3
   A person who is present nearby — or virtually connected to — a person with ADHD in order to increase their attention and focus.

Verb

1. 1
   To act as a body double: To stand-in for an actor in a film.
2. 2
   To act as a body double: To impersonate a politician in order to draw attention away from the real person or to take risks on their behalf.
3. 3
   To act as a body double: To be present nearby — or virtually connected to — a person with ADHD in order to increase their attention and focus.