What is a hysterical joke?

A hysterical joke is a joke that is so funny that it causes hysteria, a state of emotional agitation or excitement. Hysteria is characterized by uncontrolled laughter, crying, or screaming, and can sometimes lead to physical symptoms such as fainting or convulsions. Hysterical jokes are often based on taboo subjects or unexpected punchlines that catch the listener off guard and trigger a strong emotional reaction. While some people find hysterical jokes to be entertaining and harmless, others may find them offensive or even harmful, especially if they are used to make fun of sensitive or marginalized groups of people.