I’ll go first. Mine is the instant knockout drug. Like Dexter’s intramuscular injection that causes someone to immediately lose consciousness. Or in the movie Split where there’s the aerosol spray in your face that makes you instantly unconscious. Or pretty much any time someone uses chloroform.
when they try to make you sympathize with an unredeemably evil character. like the mirror universe giorgieu in startrek discovery, who was literally “worse than hitler” but they decided they wanted upstanding dogooder characters to love her for some reason