[brownsfan]

Population density is a serious issue. I seem to recall studies conducted on animals, and when the population density got to a critical level, all manner of odd and destructive behavior emerged.

[Red Badger]

http://en.wikipedia.org/wiki/The_World_Inside

[toast]

After visiting Tokyo, I would chalk this up to nothing more than a fear of crowded trains.

[E. Pluribus Unum]

I seem to recall studies conducted on animals, and when the population density got to a critical level, all manner of odd and destructive behavior emerged.

Homosexuality being one of them.