If all the girls attending it were laid end to end - I wouldn't be at all surprised.
Source: On the Yale prom; quoted in Alexander Woollcott, 'While Rome Burns'
-- Dorothy Parker, (Aug 22 1893-1967), US author, poet, journalist, humorist; She was the celebrated caustic wit of the 1920s; wrote Enough Rope, 1926 and The Little Hours, 1944.