I take a chance on remnants of their early childhood innocence (aka purity, honesty),
"What are you girls chatting about?"
Supergirl doesn't lose a second before replying,"Rainbows and unicorns!"
She is unable to mask her pride at her own cleverness, and they
Wow, they really ARE quite sneaky! All the same, I have to hide how impressed I am and suppress my own snort.