"Full Moon on the Quad" is a tradition at Stanford University in which students kiss one another at midnight on the first full moon of the fall semester.
The New York Times reported on how Stanford officials try to make sure that the event doesn't result in the mass spread of germs. Students with colds are discouraged from participating, and
students are encouraged to use mouthwash, but not to brush or floss beforehand).
The news story also mentioned Stanford trying to promote - unsuccessfully - the use of dental dams in oral sex. LOL