self-report

Etymology
was coined by players of Among Us, in which the imposter can report the body of another player he has just killed, as if having just discovered it guiltlessly.

Noun

 * 1) A kind of survey or questionnaire in which respondents read the questions and select responses by themselves, without researcher interference.
 * 2)   Something said by someone with the purpose of conveying a neutral stance on a subject but unintentionally leading to that person's bias being revealed.

Verb

 * 1) To respond in this manner.
 * 2) To report one's own problem or failing.