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A foul language term in Cantonese , mainly used in Hong Kong.

When someone did something stupid or doing something silly. We will usually call them " on 9 " - Which means " stupid penis " in english.

the number " 9 " is from the pronouciation of " penis " in Cantonese.

An excellent word for saying this to people in Hong Kong.
Mr.Tung is an on 9. ( Mr.Tung is a stupid penis )
Don't be on 9 la. ( Don't be stupid )
on 9 by Scottie August 25, 2004
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He could’ve earn a big money with this but he chose not to do it, he is very on 9
on 9 by Mahleryo May 26, 2020
To Keep on 9 means to be aware at all times without getting distracted.
By telling someone to keep on 9 is usually a threat made by posing gang members to inform you that you are in danger.
person 1 : Aye suuwhoop watchu doin in my area
person 2 : What’s it to you slob

person 1 : Your ass better keep on 9 cause im about to pump you full of lead
Keep on 9 by ds.at February 5, 2020
n. The incredibly rare girl who is a 9 in looks and has a 9 personality. Based on the assumption that true 10s do not exist in reality.
That girl at the bar is 9 on 9. She's incredibly gorgeous and has an amazing personality.
9 on 9 by Nobility1989 April 11, 2012

on cloud 9 

He was on cloud 9 after he met her.

catch you on the 9 

The saying about to see some one when something is about to happen.
Mark: yo today was fun , catch you on the 9.
catch you on the 9 by JJx1312 July 17, 2017

Poppin coochie on tha 9 

A chicago term for having sex around or on 79th street
Yea u know that girl destiny? She be poppin coochie on tha 9
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