That girl was so utterly bonkers I'm still stunned. Yelling out the letters? The fingers thing? How ironic that her father is a neurologist.
Actually, I could probably use her gestures in my own routine.
"I'll have" (touch fingers to mouth) "a double Vente" (touch fingers to mouth again) "caramel macchiato" (fingers/mouth) "with S-O-Y milk!" (jump up and down and scream with happiness.)