Overheard: The Mothership.
"Mom, that lady has special powers and is an alien. I know because I saw her alien transmitter in her pocket and it has wires and it talks directly to her body using that tube. I saw it. She can't hide from me because I saw it and it looked that's how she communicates with the mothership but she's safe and she didn't seem scared, right?"
It's at that point that I felt the need to explain to the eight year old boy's mother that it was an insulin pump.