The image is a tweet (or similar social media post) complaining about a dietitian. The joke, in Turkish, is about the absurdity of a ridiculous diet regime. The poster (presumably a dieter) is describing a situation where they were taken away by a group of "maniac" dieticians. The dieticians then subjected the dieter to "plant-based torture" (bitkisel işkenceye maruz kalmam). This torture involved, according to the post, forcing the dieter to eat broccoli with hot water as a punishment. The poster is expressing the frustration and difficulty of this supposed "diet" and expressing their despair at not being able to lose weight despite such a peculiar approach. The humor comes from the exaggeration. The scenario is nonsensical and comical, making light of strict, unrealistic, and possibly harmful diet regimes, and their ridiculous lengths. The phrase "bi grup manyak diyetisyen" (a group of maniac dieticians) is the key to the humor, as it's sarcastic and exaggerates the experience.
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