"Hooray! It's Nicky Nan Night," shouted the others.
"Heavens, so it is. I'd completely forgotten!" said Opal.
She stood for a moment as if thinking, then she suddenly ran back to the schoolroom. She was only gone a moment or two, but she returned to the cloakroom with a curious look of amusement on her face.
"What have you been up to?" asked Merle, eyeing her suspiciously.
"Ah! Wouldn't you just like to know?"
"You've been doing something!"
"Indeed! How clever we are all of a sudden. Are you clairvoyante may I ask?"
"Not at all, but I know Opal Earnshaw. You're pluming yourself no end."
Opal broke into a fit of delighted giggling, but refused all explanations, and slamming on her hat rushed away home, leaving the juniors still dancing about the cloakroom like pixies and loudly proclaiming: "It's Nicky Nan Night. We're all Nicky Nans!"
"What on earth is Nicky Nan Night?" asked Merle rather crossly, but nobody troubled to answer, so she struggled into her coat and joined Mavis, who was waiting at the door, and forgot all about the matter directly.