a wonderful thing where a guy sticks his (dick) into a girls (pussy) and thrusts back and forward faster and faster each time until it feels so good you have to stop. It is an amazing action that feels like heaven.
I had sex with Sally last night. Man, she is tight as fuck!
It is a shorter form for "simply excellent".
Girl: Do you want to go out to somewhere this weekend?
Guy: Sex, my dear.
Girl: What a gentleman!
Big sex bagel boy goes sicko mode
Dan-i like big sex
James-give breasts
Why, just why would you look up Sex in Urban Dictionary, we both know you know what it means so why?
Something something something sex something