2011-02-11
Explanation
This comic uses a Venn diagram to explain why the author refuses to discuss politics with his doctor. Circle A represents "People I argue with," circle B represents "People who get to touch my balls" (referring to medical examinations such as a hernia check), and the overlap, circle C, is labeled "Only my wife."
The humor lies in the logical implication: since the doctor falls into category B (people who handle sensitive parts of your body during exams), letting the doctor also fall into category A (people you argue with) would place the doctor in the overlap zone C, a space reserved exclusively for one's spouse. The comic plays on the practical wisdom of not antagonizing someone who has that level of physical access to you, while also making a joke about the uncomfortable nature of certain medical procedures.