HysteriCon 

a hysterical conservative.

Cletus the HysteriCon heard about a baker being forced to make a cake for a gay wedding and was so enraged that he camped outside the bakery with a gun; wrote a letter to the editor; and upvoted some nazi posts on Reddit.

HysteriCon by Uncle Joosie May 19, 2018

Hysterical 

adjective
1.
deriving from or affected by uncontrolled extreme emotion.
2.
PSYCHIATRY
relating to, associated with, or suffering from hysteria

“1 - hysterical laughter"
“2 - the doctor thinks the condition is partly hysterical"

Hysterical by SirHiccle December 23, 2018

Nine hysterical women 

An overwhelming and practical response from the fans to events in a TV series, book, film, etc.

The first nine hysterical women were Torchwood fans, who sent coffee and letters to the BBC protesting against the death of Ianto Jones. Over 900 people registered on one LiveJournal community alone.

Russell T Davies: "The 'controversy' over Ianto's death is just nine hysterical women."

Or:
If (character) dies this series, they'll have nine hysterical women on their hands.

Nine hysterical women by Galadriel1010 August 8, 2009

Hispanicus Hystericus 

A disproportional emotional over-reaction to a crisis (or event) caused by an overstimulation of the limbic system that renders efficient function of the pre-frontal cortex extremely difficult.

Bystander #1: "Excuse me... why are they yelling and screaming like that? Are they OK?"

Bystander #2: "They have Hispanicus Hystericus. They'll be OK as soon as they calm down."

Hispanicus Hystericus by Dr. Carey Perkins April 30, 2022

hysterious

A mix between "hysterical" and "hilarious"
Something that is VERY FUNNY.

"Adam Sandler is so hysterious!"

hysterious by Ninde February 21, 2005

hysterical laughter 

To come face to face with an epiphany moment that results in an instantaneous burst of uncontrollable laughter for a prolonged period of time.

I suppressed the thought of being pregnant while getting through final exams followed by a trip to the pharmacy. As soon as I saw the result of my pregnancy test I broke out into hysterical laughter.

hysterical laughter by MAM803 May 3, 2016

Hysterical Mexican Syndrome 

Hysterical Mexican Syndrome (HMS) A member of the Hispanic community whom over reacts to any situation, emergent or non emergent, which results in hyperventilation, crying, yelling, faking unresponsiveness, and abuse of the 911 system.

Maria called 911 because her baby threw up. Maria was treated for hyperventilation s/p Hysterical Mexican Syndrome, the kid was given a Tylenol.

Hysterical Mexican Syndrome by Killtankbts November 8, 2012