1.  Beer and lots of it
2.  Freshmen
3.  Hard liquor and lots of it
4.  Vibrators, the heavy duty ones
5.  Money, you know to buy alcohol to get guys drunk
6.  Bad friends who setup their drunk friends for failure
7.  Dollar beer night at the bar
8.  Washing machines
9.  Bricks or other blunt objects, see earlier update, works both ways
10. Did I say alcohol?