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Another fun tradition: Founders Day pushball, in which students, faculty and staff brave the March elements in a contest that involves maneuvering a giant inflatable ball across the snowy Great Lawn.

Vigorous informal games, having to do with floating and sinking balls and effigies: pushball, in which the players never seemed to know, or to care, upon which side they were playing; water-fights and ducking contests....

The ball of all sorts and sizes, from the marble to the pushball, would lead to endless scientific argument.