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1.
A scenario in which laughter is gravely inappropriate in regards to the mood, social or personal, for reasons of professionalism, solemnity, etc., in which the desire to laugh is exponentially increased by virtue of its own prohibition.
Man: *Bursts out laughing at his boss' funeral.*

Bystander: thinking to self "you raff you ruse."
by grummbler August 29, 2009