I don't dare nap long at my desk but do have a little "shut eye" just after lunch because nobody really cares at lunch break when everybody feels like dozing off anyway!
Yeah, everybody's sleepy after lunch, and actually some of my co-workers take a nap at their desk. But sometimes I remember one of our team members who used to work here, she didn't allow us to nap. It's been too long, I wanna see her again.