A state in which a group of people is continuously making silly jokes, that can nevertheless lead to laughing fits as a reaction. Under the right circumstances, the state can maintain itself or be induced in others contageously. The use of weed (Cannabis sativa) promotes the state in some individuals, but it can also be induced by a joke or reference to an (earlier) funny event.
lacking seriousness; given to frivolity; "a dizzy blonde"; "light-headed teenagers"; "silly giggles"