Someone in my life was recently talking about masked autism in adults:

The naive clinician or therapist asks, "do you have difficulty with socks?" and the autistic adult says no and concludes they don't have autism

The really knowledgeable one asks, "so tell me about socks," and receives a massive infodump about the very specific choices they made about socks and comfort

@recursive reminds me of how my autistic doctor who gave me my autism diagnosis started off with generic small talk then unexpectedly asked me to tell her about my favourite video game... which led to a very immediate unmasking to infodump. i didn't even realize what she did in the moment, it took until i got the diagnostic report to realize what she did!!