So, something that perpetually amuses me is when a feminist decides that woman is derived from man, and therefore decides to call herself a womin, womyn or whatever. Nevermind that man originally meant 'person' and that werman and wyfman meant the male and female owners of a household, respectively. Wer now survives in words like werewolf and such, while wyfman became wife and woman. It's just a figure of usage, and there's nothing inherently sexist about it. Languages can revert changes, too.
Female and male, on the other hand...
The prefix 'fe', which you find in female, feminist, fetus, fellatio (see avatar), and others, comes from the Proto-Indo-European root word dhehi
. Which means, to suckle, or suck.
I find it amusing that some feminists leave 'suck' in their own identification while at the same time picking on a pure, innocent word for derision.