Why Does My Autistic Child Flap Their Hands? Stimming and Autism. Gallery Why Does My Autistic Child Flap Their Hands? Stimming and Autism. Why Does My Autistic Child Flap Their Hands? Stimming and Autism. By Merlin Day Academy Therapuetic Day School|2025-12-08T20:47:43-06:00December 8, 2025|Uncategorized|