Bad humor is a type of comedy that relies on making fun of serious topics or making light of difficult situations. It often involves sarcasm, irony, and satire. The term 'bad humor' can also refer to a person's tendency to make jokes at inappropriate times or in poor taste. The crossword solution for the term 'bad humor' is 'PUN, ' which is a play on words that often relies on wordplay and double entendres.