caused by the person who is the center of a wave of happiness of other people. This happiness is transferred from person to person by word of mouth whether it is a joke or funny event.Those people tell their friends who tell their friends.
Jimmy caused a mirthquake the other day at lunch when he bumped into and knocked off the principle's hair piece in front of hundreds of students.
by CHStom November 15, 2007
"You should prepare yourselves for a mirthquake, as today's comic strip was rated 7.1 on the rictus scale." - penny-arcade.com
by C Vogue November 14, 2006
by Hecuter November 14, 2006
by withoutamartyr November 14, 2006
I would've had a mirthquake at my believed invention of the word, if it weren't proven practically ubiquitous by google!
by Da_Jesus November 14, 2006
by Giblo November 15, 2006