A British slang term for the phrase 'Laughing' usually written with more than one g, used primarily among the lower class, who can't speak. Nobody really knows how this phrase originated, but here is my theory.
One day, a youth in a hoodie was sitting at the back of the bus with his hat backwards (we'll call him Stev). His friend was scrolling through his phone, when he noticed a funny video, it made him laugh so much that he folded in half and fell onto the floor. This reminded Stev of a paper plane he made earlier that day, he remembered how the paper folded in half and how he was creasing it to make it fly better. Stev, comparing the folding of paper to the folding of his friend, and with the word crease in his head, suddenly cried. "Yo, how funny was that vid mate? You're like, creasing" His friend thought that the phrase 'creasing' was pretty good, so told his friends about it, who told their friends and their friends, until the word was so popular, chavs used it on a daily basis. This is how creasing became the word we know of today.
One day, a youth in a hoodie was sitting at the back of the bus with his hat backwards (we'll call him Stev). His friend was scrolling through his phone, when he noticed a funny video, it made him laugh so much that he folded in half and fell onto the floor. This reminded Stev of a paper plane he made earlier that day, he remembered how the paper folded in half and how he was creasing it to make it fly better. Stev, comparing the folding of paper to the folding of his friend, and with the word crease in his head, suddenly cried. "Yo, how funny was that vid mate? You're like, creasing" His friend thought that the phrase 'creasing' was pretty good, so told his friends about it, who told their friends and their friends, until the word was so popular, chavs used it on a daily basis. This is how creasing became the word we know of today.
by TheNHS April 1, 2015
Get the Creasing.mug. Lucy: *says something funny*
Keegan: *creases*
Lucy: Oh look! Keegan is creasing. He's laughing so hard.
Keegan: *creases*
Lucy: Oh look! Keegan is creasing. He's laughing so hard.
by Vxaei November 24, 2018
Get the creasingmug. Verb- To be creased
Another term for laughing, also can be used as a substitute for lol in either speech or in type.
Another term for laughing, also can be used as a substitute for lol in either speech or in type.
Person 1: *falls over*
Person 2: *points at person 1* haha! Creased!
Person 1: Did you see that bird crap on her?
Person 2: Yeah, I was creased!
Person 2: *points at person 1* haha! Creased!
Person 1: Did you see that bird crap on her?
Person 2: Yeah, I was creased!
by 1stknowledge April 16, 2011
Get the Creasedmug. 
Used in the UK as a slang word for funny, its unsure where the word started being used in this way but its one piece of slang that has swept its way across and is now used by most people in GB its due to the fact that something makes you laugh so much that your leaning over and cause your sides to "crease" tho its now used very over-commonly.
School Teacher: Billy get out the class, dont do that EVER again
Class: HaHa xD What a crease Billy..
Class: HaHa xD What a crease Billy..
by BongTokes4U March 31, 2009
Get the Creasemug. “Dude was talkin’ about a bunch a shit that made no sense… man, when I tell you that shit had me creased… bruh…”
“I ain't gon’ lie bruh… I’m hella mad… that shit was probably hella funny…”
“I ain't gon’ lie bruh… I’m hella mad… that shit was probably hella funny…”
by TrenchTrophies July 25, 2021
Get the Creasedmug. by sniwed July 29, 2007
Get the creasemug.