silent laughter 

When something is so funny, or you are in a state of such slap happiness, that regular laughter transforms into an almost silent and uncontrollable activity. Usually accompanied by tears, silent laughter is most likely the best kind of laughter. You have to make a conscious effort to remember to breathe as your lungs lose air fast in the process of silent laughing. Your ribs start to ache and you begin to wonder if you'll be physically able to take a deep breath before resorting to more silent laughter. Friends and family may laugh at you in this state, or they may be joining in right next to you. Concerned strangers will stare at you and seriously consider finding you help, or they may just hide you from their children.

After I mentioned an inside joke, I looked over to my friend who was doubled over with silent laughter.

silent laughter by Blueshue July 12, 2014

laughter 

when a smile has an orgasm.

the group broke out into laughter when they orgasmed?

laughter by jkdtown2 December 28, 2005

Laughernia 

When your boy cracks a joke so funny that you get a hernia from laughing.

I was feeling great until Daquan told me that joke and I got a laughernia

Laughernia by Marketing G August 6, 2014

Kinetic laughter 

When 2 or more girls are together and start laughing uncontrolably and/or spontaneously.

Madi and Cassie started laughing uncontrollably at random. Rob named the phenomenon kinetic laughter.

Kinetic laughter by Kineticlaughtersociety April 23, 2018

wetness to laughter ratio 

A ratio relating to the volume of urine excreted concurrent with laughter which may be used as a fairly reliable estimate of how funny something is.

Pissing myself the whole time and unable to stop, I cleverly cited the prank’s wetness to laughter ratio as an excuse.

wetness to laughter ratio by Dr Bunnygirl August 16, 2019

laughter interruptus 

When the act of sexual intercourse is interrupted by the laughter of one or both participants.

"How do you expect me to keep it up when you keep making all those ridiculous jokes? I've got the worst case of laughter interruptus I've ever suffered."

laughter interruptus by Scarlett.007 February 6, 2010

laighter 

When you youch so hard you have to go somewhere because my name jeff.

Ok guys I’m leaving. Laighter!!

laighter by The creater of youch (jeff) December 28, 2017