Probably a stress reaction to being confronted with an uncomfortable truth, and/or physiological preparation for lying.
https://www.healthline.com/health/mental-health/nervous-laughter#medical-causes
https://askthepsych.com/atp/2008/03/17/inappropriate-laughing/
This has to be the case. I don't think this humorless cunt has any genuine emotional response, just behavioral mechanisms to aid her psychopathy. Or whatever, I don't know anymore.
I have a certain relative who is a pathological liar and general all around dirtbag who has always broken into uncontrollable creepy hysterical laughter at the most inappropriate times imaginable, especially when being confronted about lies and such, just like this wicked wench does.
Yup, just buying time to figure out their next lie. It's infuriating
I think it perfectly fits the profile for duper's delight
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