And––The Answer- Popsicle

“I didn’t say anything about Simon.” Crunch, crunch. “I like Simon.”
“Well, sure, but after Harriet told you he said you had Popsicle legs—”
“I do have Popsicle legs.”
“No.” The conversation was not going as Tony had anticipated. “I mean Harriet said you said something bad about Simon and maybe”—he gave an improbable laugh—“about me.”
“Oh, I said you were juvenile.”

Byars, Betsy. The Cybil War (p. 35). Penguin Young Readers Group. Kindle Edition.