Someone at work probably forwarded you the "Boyfriend's Arm" pillow during their lunch hour; you either laughed and thought "those crazy Japanese," or simply deleted the email because it started with "Fwd:."
An equally disappointing offering (perhaps moreso) comes from Japan's Trane Corporation (not related to the A/C and heating people) in the form of the "Lap Pillow." You probably understand based on the picture alone, but just in case you can't tell, it is a urethane foam pillow shaped like a woman's legs. It's even equipped with a miniskirt, for some reason. TechJapan has translated an interview with an employee of the Trane Corporation, who insists that the pillow isn't perverted, but has healing powers. Naturally, he can be trusted.
Girlfriend's lap pillow [TechJapan]
Women snuggle up with 'Boyfriend's Arm' [MSNBC]