Kanban no Musume

From MangaHelpers:

A collection of erotic stories, mostly having to do with public sex or sex in a place where the participants are likely to be seen. The title story, "Kanban no Musume," features a pretty waitress at a restaurant where her protective father works. Right under his nose, she and another worker get up to some sexual shenanigans with quail eggs. Other stories feature a former teacher-and-student on a bus, a lady sexily coaxing a man away from his work in an office, and other situations.