Oh boy do I understand. I was researching this exact problem when I stumbled across Asperger's. The more anxious I get, the worse the problem gets. Since I was a toddler, I've used hand gestures, whistling and other noises to try to communicate. I remember as a toddler, pointing to the cupboard with the glasses and making swallowing noises to indicate I wanted a drink of water. As an adult, I've been known to whistle and draw a half circle in the air to indicate, "go around."
Reciting a movie? Wow, the best I could ever do is one seen from a comedy.
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I finally found an avatar.