242
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

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421
To define or describe something that is so amazing no other words can compare it as such. When used properly, it becomes gender neutral, where as the word "sexy" can be limiting as well as leaning towards gender specifics.

Looking as something (anything that's beyond a coined term of beautification) and calling it out as legitimately original!
Example 1

Person 1: "Damn yo, look at dat shit?!!"

Person 2: "Right?!...it be straight sex!"

Example 2

"Did you check out that artist's work?!!!....cause it was so scex!
by Mike-E Danger January 07, 2014

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422
what you want to do if you are looking this up
i wanted to have sex so i told my girlfriend to meet me in the girls bathroom at 2. wen i got there she was there and we started making out with tongue. she ripped off my shirt revealing my rock hard 6 pack then she ripped off my pants and underwear revealing my rock hard 12 inch long 3 inch wide cock. she gave me a BJ while i stripped her revealing her 32 double D tits. after about 10 minutes a beautiful blond with 30 double D tits walked in and started to strip. she told me to eat her out. i gladly obliged. after 10 minutes i got up and fucked my girlfriend in pussy while she ate the blonde out. eventually i had to get some of the blonde and my gf switched roles with the blond and i eventually cummed and gave them both facials. then we left.
by awesomepguy January 07, 2012

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423
Half nausious pain, half complete and utter, breath taking pleasure. When a man pounds the shit outta a girl until she moans like a slut.
"Dude, last night she gave me dome and so i pounded her pussy as we had sex.."
by alibaby818 November 13, 2011

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424
something with your girlfriend.
I had sex with your girlfriend twice
by Willow3333 June 23, 2011

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425
wrestling naked. 69. friction between naked bodies. nakedness. over 400 positions (get a book). use a glove.
stormi and dean or brittnee and tyler. ;) sex
by brittormitastic October 01, 2010

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426
What your parents were getting at with the birds and the bees. (Still fucked up, inter species isn't right.)

If you need more info, I suggest you hit yourself in th head because this is common sense.
sex is simple. dick go's in vajajay. :)
by ShubbaBANG November 20, 2009

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427
A sweet physical convulsion shared with an interesting partner.
At one point, during sex, the beautiful girl raised her arms in the air as if trying to touch the moon and moaned.
by Martin Irving June 26, 2009

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