If you were living in Edinburgh in the sixties, you would have seen that the area of sloping grass in front of the divinity college above the road up the Mound (which goes from Princes Street up to the Royal Mile) was at that time unfenced, and was very popular with students of all subjects as a place to sit around in the sun in summer, facing downhill to Princes Street. The fashion then was for mini-skirts, which caused those walking up the Mound to call that slope "Fanny Hill". No red plastic, though.