In biology, sex is a process of combining and mixing genetic traits, often resulting in the specialization of organisms into male and female types (or sexes). Sexual reproduction involves combining specialized cells (gametes) to form offspring that inherit traits from both parents. Gametes can be identical in form and function (known as isogametes), but in many cases an asymmetry has evolved such that two sex-specific types of gametes (heterogametes) exist: male gametes are small, motile, and optimized to transport their genetic information over a distance, while female gametes are large, non-motile and contain the nutrients necessary for the early development of the young organism.

An organism's sex is defined by the gametes it produces: males produce male gametes (spermatozoa, or sperm) while females produce female gametes (ova, or egg cells); individual organisms which produce both male and female gametes are termed hermaphroditic. Frequently, physical differences are associated with the different sexes of an organism; these sexual dimorphisms can reflect the different reproductive pressures the sexes experience.
lets have sex...... : D
by adfasdgfslgjjgerpgrei August 01, 2008
two ppl coming together and making love or fucking
I had finshed cooking when my boyfriend took me right.He carried me to the bed and i rip his clothes off.I took charge and mounted him.I Used my hips and moved ina circular motion .Then i bent backwards and felt his cock inside me more.after hours of that he went to work and i was happy.That was the best sex i had ever had
by bloody vampire April 29, 2007
Best thing ever. End of story.
Okay, so sex is messy and unpredictable sometimes but it's still the best thing ever.
by Harlan Huynh April 22, 2007
A song that I definetly like by Lyfe Jennings, in which the song is telling you NOT to have sex, rather than most rap songs.
S.E.X. Isn't a good thing in some cases.
by Pink Yoshi! January 22, 2007
The starter of all problems. Consequences: unplanned pregnancy, dropouts, disease, the end of "fun", second guessing of relationships, pornstars, whorism and sluttiness, a baby, Juno, etc. Etc. There's a 5% chance of sex turning out for the better.
Sex caused my start to parenthood.
by doza13 May 27, 2011
Up the ass
Down the throat
In-between the legs
Out comes the baby
I had sex last night
by BIllllIIIIiiiiii!!!!!!!!! October 12, 2008
Oxford dictionary decripes sex as one male injects his fluid into a female, the dictionary also says this can result in a baby if the correct protection is not used.BUT WHO CARES WHAT THOOSE DICK HEADS THINK, THEY WOULDN'T KNOW A DICK IF IT CAME UP get the rest.
(come on babe, we might has well it feels way better without it)
by Un known June 03, 2005
wow really?
i swear how do yu not know what this is?
and if yur looking it up cause yu wanna

get horny and shiit then wow get a lyfe
who ever us reading this obviously cant get some
so they read bout sex here!

get a lyfe .. for real!
by wow, really? February 15, 2010

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.