Meaning "quality of being male or female" first recorded 1520s.Meaning "sexual intercourse" first attested 1929 (in writings of D. Lawrence); meaning "genitalia" is attested from 1938.We've started putting together pages devoted to some of our favorite models among the hundreds we have photographed over the years.

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This section also has our shoots of booth babes at car shows.

Check out our Celebrity Babes section for tons of celebrity profiles and features along with our Celebrity Slideshows.

Our Living Language : Thanks to high school biology, we are accustomed to thinking of the sex of an organism as being determined by the chromosomes, notably the sex chromosome in humans (designated X or Y).

But this is not the whole story, and it applies universally only to mammals and birds.

World Tour We have been fortunate to travel all over the world in seek of beautiful models for our original photoshoots.

We made it to places like Prague, Budapest, Bucharest, Kiev, London, Costa Rica and Australia over the years.[Walter Prichard Eaton, "At the New Theatre and Others: The American Stage, Its Problems and Performances," Boston, 1910] (sěks) Either of two divisions, male and female, into which most sexually reproducing organisms are grouped.Sex is usually determined by anatomy, the makeup of the sex chromosomes, and the type and amount of hormones produced.Clinging to rocks and to each other, they form piles. If another limpet attaches itself on top of the male limpet, the newcomer becomes male, and the male limpet beneath it reverts to being female.These slipper limpets show the evolutionarily advanced feature of internal fertilization, and the male on top extends his reproductive organ down the pile of females below him to fertilize their eggs.We don't do as many photo shoots these days, but we'll still bring you great content featuring beautiful women from all types of backgrounds. Follow us on Twitter @bullzeyedotcom and @hot_babes for updates on our new models, and you can follow us on Google , Facebook and You Tube as well.