How do you know when you should tell a heterosexual woman to stop sucking your dick?
When there is blood coming out of your dick instead of sperm.
Stop Sucking When Blood Appears
Categories
Explanation
Experiment
The joke uses a shocking and graphic image to create humor. It plays on the idea of a sexual act gone wrong, exaggerating the situation to an absurd and humorous extreme. The punchline is unexpected and relies on the reader's understanding of basic human biology, contrasting the expected ejaculation of sperm with the alarming presence of blood.