But, if NASA had any foresight, looking "out of the box" for safety systems innovations, say, in the event of a spacesuit jet-nozzle failure/loss of fuel and subsequent inability for the astronaut to navigate in space essentially stranding him without the ability to move, NASA would have a very "elegant" back-up rescue system with nozzles built into the spacesuit directly behind the anal fart-gas sphincter which would allow a stranded astronaut some modicum of movement, control, navigation and with only a few grams of beans in a pre-space walk meal, or even have the astronaut with access to dried bean paste within the space suit as Apollo astronauts had for their own energy and nourishment, it might some day save a life. Don't laugh. I see the headline now. March 26, 2098; "Stranded Astronaut Farts Himself to Safety."
First, I'm sure that 'sign' was photoshopped.
Second, the WHY or WHAT would happen seem obvious. I've never been in a Space Suit, so maybe it's not really obvious. Makes one wonder what would happen if one were to suddenly overpressurize their suit.