Possible Clues:

• ''When I Was ---'' (''HMS Pinafore'' song)
• Gilbert & Sullivan's 'When I Was --'
• "Only ___" (Oingo Boingo song)
• "When I was __ ...": GIlbert & Sullivan lyric
• '___-in His Lamp' (Bugs Bunny classic)
• "When I was __ ...": G&S song lyric
• "When I was --- ..."
• "When I was ___" ("H.M.S. Pinafore" song)
• Burns's 'There Was ___ Was Born in Kyle'
• 'When I was __...'