chee sin 

Cantonese dismissive slang meaning 'crazy' or 'stupid'. Used to describe ideas, behaviour or even people.

ideas: "and after paying the initial fee, they requested a further $600 for membership .....chee sin!"

behaviour: "today he went chee sin and played on his playstation for 7 hours straight."

people: "you are chee sin" or "what's up, chee sin girl?"

chee sin by TheFlowerDuet June 30, 2006

Chee Sing 

A Chee Sing is the most gayest(happy) person ever. He loves playing musical instruments and has a never ending love for most anime.

Bro that Chee Sing is so happy everyday

Chee Sing by ILoveMyCatsAndLife! March 18, 2022

cheesin' mad hard 

When someone says that they are cheesin real hard it means that they are smiling real hard or that they have a really big smile on their face.

I am so happy, I'm cheesin' mad hard!

cheesin' mad hard by Mouse Ninja July 16, 2014

cheesin'

The act of smiling so intently that one might almost laugh. A smile that is intense.

Gurl, you are cheesin' so hard that that man knows you want him.

cheesin' by Wynette zMcWilliams July 29, 2005

cheesin'

Smiling artificially and excessively largely, as if a picture is being taken of you.

Man, I had to lie to my parents last night and I was cheesin' hard!

cheesin' by Walker, Seth, Ben February 9, 2005

cheesin 

walkin around with a huge smile on your face. from where someone is taking a picture and they tell you to "Say cheese!"

"That dood's cheesin!"

cheesin by arecks June 27, 2004

Cheesing of da bean

When you go crazy or wild (often in a sexual way) after you pop prescription pills e.g molly or percocets

Cheesing of da bean
Dude#1: man dereck was cheesing off da bean on Emma last night.

Dude#2: wow bro that’s crazy

Cheesing of da bean by Hugecocdoc December 18, 2020