An observation

I've noticed something at work recently that I don't think I've seen before. When I'm in the bathroom, I see guys wash their hands after they use the facilities. But, if it's the end of the shift, I've noticed quite a few don't wash their hands after using the toilet. Even after taking a dump. (And who the hell waits until quitting time to take a dump? Don't they have a bathroom at home? But I digress.)