"It's a muscle."
"OW. Is it supposed to do that?"
"Uh- No. It's supposed to be like that" (holds out hand, fingers splayed)"Yours is like that" (holds out hand with fingers scrinched together like an angry duck shadow puppet)
"Mmm. How can I, a person with no visible reflexes, get so tightly wound?!"
It's an oxymoron.