Whatever the case, it was only days into the exposition before Alpha — maddened with sexual desire — broke out of the Palace of Science in search of the Nudist Queen. He found her in Balboa Park. There, he spent the day pleasing her and her constabulary of bronzed, buxom subjects. The photograph above was taken at the end of that day, and even though Alpha’s creator had never programmed him to feel joy, you can clearly see the curl of a smile somehow suffuse the sparkle-spitting slit of his oblong mechanical mouth. Alpha is the luckiest robot who ever lived.

There's some boobs here, but it ain't porn. Amazing explanation of the robot/neked pic from the 30s.