Death from laughter is a recorded cause of death throughout history.

Death from laughter is a rare form of death, usually resulting from cardiac arrest or asphyxiation, caused by a fit of laughter. Instances of death by laughter have been recorded from the times of ancient Greece to the modern day.

Notable cases;

Zeuxis, a 5th-century BC Greek painter, is said to have died laughing at the humorous way in which he painted the goddess Aphrodite – after the old woman who commissioned it insisted on modeling for the portrait.
One ancient account of the death of Chrysippus, the 3rd-century BC Greek Stoic philosopher, tells that he died of laughter after he saw a donkey eating his figs; he told a slave to give the donkey neat wine with which to wash them down, and then, “having laughed too much, he died”.
In 1410, King Martin of Aragon died from a combination of indigestion and uncontrollable laughter triggered by a joke told by his favourite court jester.
In 1556, Pietro Aretino “is said to have died of suffocation from laughing too much”.
In 1660, Thomas Urquhart, the Scottish aristocrat, polymath, and first translator of François Rabelais’s writings into English, is said to have died laughing upon hearing that Charles II had taken the throne.
In 1799, William Cushing, a pauper who lived in the parish of St Andrew’s, Norwich, England, died from “a fit of excessive laughter, which lasted five minutes.”
On October 14, 1920, 56-year-old Mr. Arthur Cobcroft, a dog trainer from Loftus Street, Leichhardt, Australia, was reading a five year old newspaper and was amused at the prices for some commodities in 1915 as compared to 1920. He made a remark to his wife regarding this, and burst into laughter, and in the midst of it he collapsed and died. A doctor named Nixon was called in, and stated that the death was due to heart failure, brought by excessive laughter.
On 24 March 1975, Alex Mitchell, from King’s Lynn, England, died laughing while watching the “Kung Fu Kapers” episode of The Goodies, featuring a kilt-clad Scotsman with his bagpipes battling a master of the Lancastrian martial art “Eckythump”, who was armed with a black pudding. After 25 minutes of continuous laughter, Mitchell finally slumped on the sofa and died from heart failure. His widow later sent The Goodies a letter thanking them for making Mitchell’s final moments of life so pleasant.Diagnosis of his granddaughter in 2012 of having the inheritable long QT syndrome (a heart rhythm abnormality) suggests that Mitchell may have died of a cardiac arrest caused by the same condition.