Just a thought. What about HI: Humor Impaired? How are those people covered by both assistive technologies and authors? What can be done for them to also have an equal experience on web?
And I’m half joking: there are medical conditions making people unable to discern humor and irony.
Early phase
have difficulty understanding abstract concepts (that is, not understand humor as readily, or have difficulty understanding concepts such as the past and the future)
The UCSF team mapped their brains using magnetic resonance imaging, MRI, which showed associations between the deteriorations of particular parts of the brain and the inability to detect insincere speech.
Canned laughter links or pseudo markup: LML (Laughter Markup Language) I’d suspect the use of emotions ( ) for example and plain clear language. Are you trying to tell me Mitică you think you are showing ‘signs’ because you cannot determine sarcasm any more?
The WCAG itself doesn’t really cover cognitive that much really and obviously catering specifically for some mental illnesses is beyond its scope so a more generic approach would be needed to help.
But I especially recognize the usefulness of captioning for Pave the Cowpaths: 2 bewildered looking cows standing in a field. behind them is a huge fire. Text says “Pave the cowpaths”. LOL