Something that is
funny but you don't really know why. Usually results in some form of uncontrolled laughter over an object/person/situation normally considered uninteresting.
Whysterics are most common after a
run-in with
death, or during the consumption of substances legal or otherwise.
(Person 1 sees a cow eating grass in a field.)
Person 1: "Ahhahahahahahaaha! That cow! Oh my god! Sooo
funny! Urgh, I'm dying!!"
(Person 1 continues to laugh uncontrollably.)
Person 2: "Dude..."
(Person 2 looks at Person 1, confused.)
Person 2: "Man you're having a
proper Whysterical
moment, what've you had?"