I don't think this one is in Webster's.

This morning, Sarah wanted me to "play puzzles" with her. "Not right now, sweetie. It's time to get dressed and go to school." She looked a little disappointed and sighed. "Okay, Mommy. We can to it nexterday."

"Nexterday?"

"Uh huh. Nexterday."

"Is that like tomorrow?"

"Yep. Only it's nexterday."