PMS (and the menstruation/ovualation cycle in general) is IMO the definative proof that there is a God and that it is in fact a man with a sick sense of humour.

If Darwin's evolutionary theory of the survial of the fittest is indeed true, how the fuck how can blood pouring out you vagina for 4-5 days a month (and all the associated hormonal changes that go with it) be considered a evolutionary benefit? Do any other female members of a species on this planet have to deal with this shit?