how do you forget to flush?

ok, disgusting as it is... I have to vent. I share a 3-stall bathroom with about 15 other women at work. My question is, "HOW HARD IS IT TO REMEMBER TO FLUSH?"  These are all adult women !  Does this mean they leave 'floaters' and toilets full of pee at home, too? YUCK YUCK and MORE YUCK !!