A) The sexiest sexy time sex you've ever had.
B) A person who is the epitome of sexy
Bro: No way man I heard shes a freak in the bedroom
B) Guy 1: Dude look at her she has the best ass I've ever seen and look at those eyes... wow
Guy 2: Dude thats Brittany she's the sex. she's berry hot.
2)Term used to describe something or someone that is very cool
2a)Your new car is the sex.
b)Kimmy let me borrow her awesome shoes for the dance, she is the sex.
A phrase that describes something that is good, comparible with 'cool' or 'hip'.
The term was first coined by hardcore punk teenagers in the southwest of England during the first part of the new millenium who were tired of using outdated words used by 'scenesters' and 'topshop blands'.
The Sex is often used when referring to something with erotic conitations to add emphasis to the particular act or activity.
Other variations of 'The Sex' include 'le sex', which adds a French flavour to the phrase again increasing the erotic conitations ever further.