This trope is when a threat - usually a death threat - is played for laughs by being a bit, well, odd. This can include a threat that's unnecessarily long and convoluted, and the one making it gets a bit lost; or a threat that simply incorporates some really bizarre elements; or a pathetically nonthreatening sort of threat ("Do X, or I'll... give you some really evil looks when your back is turned!"). Rusty cutlery seems to be a particular favorite, though. Examples of Cut His Heart Out with a Spoon include: