Expensive Haircut

Listen up, chucklehead. The joke plays on the double meaning of "haircut." Normally, a haircut is when you go to the barber and get your hair trimmed. But chemotherapy, which is a medical treatment for cancer, often causes hair loss. Since cancer treatment is super pricey in the US, losing your hair via chemo is a really expensive "haircut". Bet you didn't know that, you probably can't afford one anyway because you are an idiot.