Remember the dewey decimal system? - I know I do.

[Ken'sPen]

When I was in college I built a pyramid of glasses
they were filled with water...
and napkins were used to syphon the water out....

It would be a race when I left for the workers to clean it up before enough water was displaced to bring the whole mess crashing down...

one day we built an elaborate one,
and as I was leaving my roomate promised me a case of Heinekin if I knocked it down with a salt shaker,

two days later the dean informed me I would be working many many many hours in the library.