The act of shitting yourself while laughing at something. This happens because you were laughing so hard, your anus laughed with you.
Friend 1: 'My little sister told me the Justin Bieber movie was the best experience of her life and started to cry'
Friend 2: 'What did you say?'
Friend 1: 'I started laughing uncontrollably, but then I had a Sphincter Giggle and ran to the bathroom to clean up'
Friend 2: 'OMG I think I just had one too!'
Friend 2: 'What did you say?'
Friend 1: 'I started laughing uncontrollably, but then I had a Sphincter Giggle and ran to the bathroom to clean up'
Friend 2: 'OMG I think I just had one too!'
by thatguywhosaysstuffsometimes February 28, 2011

When you can’t stop laughing during an inappropriate moment & it makes you laugh even harder. For example, you’re in a serious meeting & you get a case of the giggles that you can’t stop.
by My dad left for cigarettes October 31, 2022

A “Giggle God” is one that is flamboyantly thick and is one that is in a super zesty mood all the time who like to giggle in serious situations .
by sharavisniceandtall May 6, 2023

by Janae Owens August 29, 2015

"Last night on call you had some of the midnight giggles."
"Congrats you have performed the midnight Giggles."
"Congrats you have performed the midnight Giggles."
by TallTart May 31, 2023

When you can’t stop bloody laughing in serious situations. In ANY situation. That’s the giggles. Bloody annoying.
by Miloidunno November 28, 2023

Abby: how do you make a tissue dance?
Evan: I dont know?
Abby: You put a little boogie in it :0
Evan: Wow, that really tickles my giggle box
Evan: I dont know?
Abby: You put a little boogie in it :0
Evan: Wow, that really tickles my giggle box
by giggleboxguy July 21, 2022
