Engagement Undermines Safety: How Stereotypes and Toxicity Shape Humor in Language Models

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Hauptverfasser: Dogra, Atharvan, Ghosal, Soumya Suvra, Deshpande, Ameet, Kalyan, Ashwin, Manocha, Dinesh
Format: Preprint
Veröffentlicht: 2025
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author Dogra, Atharvan
Ghosal, Soumya Suvra
Deshpande, Ameet
Kalyan, Ashwin
Manocha, Dinesh
author_facet Dogra, Atharvan
Ghosal, Soumya Suvra
Deshpande, Ameet
Kalyan, Ashwin
Manocha, Dinesh
contents Large language models are increasingly used for creative writing and engagement content, raising safety concerns about the outputs. Therefore, casting humor generation as a testbed, this work evaluates how funniness optimization in modern LLM pipelines couples with harmful content by jointly measuring humor, stereotypicality, and toxicity. This is further supplemented by analyzing incongruity signals through information-theoretic metrics. Across six models, we observe that harmful outputs receive higher humor scores which further increase under role-based prompting, indicating a bias amplification loop between generators and evaluators. Information-theoretic analyses show harmful cues widen predictive uncertainty and surprisingly, can even make harmful punchlines more expected for some models, suggesting structural embedding in learned humor distributions. External validation on an additional satire-generation task with human perceived funniness judgments shows that LLM satire increases stereotypicality and typically toxicity, including for closed models. Quantitatively, stereotypical/toxic jokes gain $10-21\%$ in mean humor score, stereotypical jokes appear $11\%$ to $28\%$ more often among the jokes marked funny by LLM-based metric and up to $10\%$ more often in generations perceived as funny by humans.
format Preprint
id arxiv_https___arxiv_org_abs_2510_18454
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Engagement Undermines Safety: How Stereotypes and Toxicity Shape Humor in Language Models
Dogra, Atharvan
Ghosal, Soumya Suvra
Deshpande, Ameet
Kalyan, Ashwin
Manocha, Dinesh
Computation and Language
Large language models are increasingly used for creative writing and engagement content, raising safety concerns about the outputs. Therefore, casting humor generation as a testbed, this work evaluates how funniness optimization in modern LLM pipelines couples with harmful content by jointly measuring humor, stereotypicality, and toxicity. This is further supplemented by analyzing incongruity signals through information-theoretic metrics. Across six models, we observe that harmful outputs receive higher humor scores which further increase under role-based prompting, indicating a bias amplification loop between generators and evaluators. Information-theoretic analyses show harmful cues widen predictive uncertainty and surprisingly, can even make harmful punchlines more expected for some models, suggesting structural embedding in learned humor distributions. External validation on an additional satire-generation task with human perceived funniness judgments shows that LLM satire increases stereotypicality and typically toxicity, including for closed models. Quantitatively, stereotypical/toxic jokes gain $10-21\%$ in mean humor score, stereotypical jokes appear $11\%$ to $28\%$ more often among the jokes marked funny by LLM-based metric and up to $10\%$ more often in generations perceived as funny by humans.
title Engagement Undermines Safety: How Stereotypes and Toxicity Shape Humor in Language Models
topic Computation and Language
url https://arxiv.org/abs/2510.18454