"Of course!" I replied. "What's my part?"
With a little shimmy of her shoulders, she instructed, "Possible...Possible...Possible..." giving it a jazzy rhythm with a questioning emphasis on the last syllable.
I imitated as well as I could, including the sassy shake of the shoulders as Ellery joined in with her part, alternating with mine.
"Cracker! Cracker! Cracker!"