Pleasantly humorous; jocular.
Treating serious issues with (often deliberately) inappropriate humour; flippant.
Of an idea or statement, humorously silly or counterproductive for the purpose of sarcastically advocating the opposite.
Pertaining to laughter, used in laughing, or to be the subject of laughter.
Relating to a particularly severe form of epileptic fit, in which there is a sudden burst of energy.