Sex 

What the fuck do you think it means? Go ask your parents dumbass.

Joe : hey Sally let's have sex!
Sally : but you're my brother!

Sex by Sally's Brother May 16, 2018

Sex 

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

Sex by Dicvface April 19, 2018

Sex 

Get on top, naked, and dirty and fuck him/her

“Yeah lets have sex”

Sex by Mo_mack May 28, 2018

sex 

when a boy put his dick in a girls pussy

me and a boy had sex

sex by hfndb June 12, 2018

Sex 

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!

Sex by 🌹 Romeo 🌹 June 18, 2018

Sex 

When you put a mans penis in a lady’s vagina

Penis goes in vagina and that’s sex

Sex by XxxmotherfuckinhardmanxxX June 26, 2018

Sex 

Putting a thing inside another thing and hopefully making a human

Let's have sex

Sex by ztphonehome July 10, 2018