[ He lets out a hum, like he understands but not really. He's old, as she eloquently put it. He's not going to go around using hip slang from the 80's. ]

Mutants. [ An important correction. ] It's just one single word. And you are that if you have a... something special in your body. Your cells. Do you know what those are?

[ He's guessing no, but it's worth asking regardless. ]