1. The unfortunate event that you have the giggles, and shart while giggling.
2. A silly, spasmodic laugh; titter from
ill-concealed amusement which turns into nervous embarrassment from
an impromptu shitty fart.
Marvin and Lucile were thoroughly satistfied with their adventurous dinner date at Sloppy Joey's, until they both had chili giggles.
The chili giggles struck suddenly while we were all cracking jokes.
That questionable buffet looks like a great source for some chili giggles.