Possible Clues:

• 'I never ___ man ...'
• Cleverly self-referential
• Physical opening
• "... Simon ___ pieman ..."
• Prefix with physics or data
• Like crossword clues about crossword clues, say
• Prefix with "tarsal" or "physical"
• Transcending
• Like a footnote that explains footnotes
• "I ___ man with seven wives ..."