sorry I'm so late on this thread....

It's hard to pick out my favorite.
Back in the winter of '69 we kept up a nightly conversation with campus security guard who answered the ND phones at night. We were always working on the campus cops.
One night during a heavy wet snowfall we called up security and one of us told security that he was helping push his roommate out of the snow and the cars slid back breaking his foot. They sent one of their wagons around to the back of Farley to pick him up. By that time we'd rolled a snowball about 5 ft. in diameter and had it on the edge of the roof. Collapsed the security car roof about 2 feet.