I'd like to see anyone trying to convince Mommy door-to-door to share some of Baby's used diapers. "Hi.. uhm.. will you let me look at your baby's FRESH feces, please? Thank you so much!" That should be a scene.
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If it doesn't work with one baby, try to find another one. One will work!"
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Good one. How many babies before one's charged with 'sick perversion', I wonder. There may be better ways, I think, safer.