The unholy purpose of this pukebot is to help fight norovirus, a virus that causes extreme stomach upset and is currently rampaging through Britain, turning the entire country into a Monty Python sketch.
Health and Safety Laboratory
Though it is decidedly light on menstrual jokes.
Since norovirus is spread primarily through the air, the research team needed a way to track spew particles to get a better understanding of how the virus travels. Though there may have been better methods -- such as literally any other possible method you can think of. Seriously, just off the top of your head right now. Researchers decided to set up a mannequin head with a pump that ejects fluid on command. Then they shined an ultraviolet light into the room to see where all the little droplets went.