Possible Clues:

• Terse rejection
• "Er ... I'll pass"
• "Er, don't think so"
• Curt refusal
• 'Yeah ... I don't think so'
• "Yeah, don't think so"
• 'Let me think ... huh-uh'
• 'Yeah . . . that's wrong'
• ''Well, I forbid it''
• "Did you really think I'd go for that?"