http://nymag.com/thecut/2013/04/lean...e-already.html
[W]omen report going to different floors, or walking roundabout routes from their desk to the bathroom. And some say they’ve experienced the “standoff,” when two or more women are in the bathroom, but all decline to do their business until the others leave — instead waiting awkwardly, in silence, writhing in emotional and physical discomfort, until someone surrenders.
These anxieties are not exclusive to females. In seminal guide "How to Poop at Work," Brian Moylan, a man, also describes the "unspoken shitting toilet" phenomenon. Still, women are widely believed to experience greater pooping anxiety than men. Dimon continues with the sad story of one such woman:
Jill, 28, a Vancouver native now working at an insurance company in New York City, said that if she absolutely can’t avoid the act entirely,
she lifts her feet off the ground and props them up against the side of the stall to avoid the “chance that the person next to me would recognize my shoes and forever hold in their heads that I was the girl” defecating in the ladies’ room.
(more poop links at the original)