Related Clues:

• With 20-Across, Sean Penn movie
• '___ Sam' (2001 Penn-Pfeiffer flick)
• 'For real?'
• Possible answer to 'Really?'
• "How sweet ___!" (Jackie Gleason)
• English sum?
• Reply to 'That a fact?'
• 'You know how ___'
• 'How Sweet ___'
• "___ the Walrus" (The Beatles)
• "How sweet ___!"
• 'For sure!'
• Reply to 'That so?'
• Gleason's "How sweet ___!"
• "Oh what fun ___ to ride . . ."