Possible Clues:

• "Peanuts" tomboy who says, "I hate talking to you, Chuck!"
• "Peanuts" character with a tendency to sleep through class
• Refreshing chocolate treat
• "Peanuts" girl who calls Charlie Brown "Chuck"
• Character who calls Charlie “Chuck”
• "Sir," to Marcie
• Spice Gal called ''Sir'' by Marcie
• Friend of Charlie Brown