If you looked like this dude, you'd be saying "That hurts" as well. This is a robot pre-programmed with 8 different medical conditions.
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It has 24 sensors under its soft, warmish silicone skin and can respond to proddings and pokings with vocal complaints. Designed as a teching aid, they've discovered that laying hands on a robot makes you more ready to handle squirmy, wet, and stinking human beings.
Original Story [Yomiuri Shimnun via PinkTentacle via TechTickerBlog]