My mother said I'm sexy. I said no, I have cancer.
Sexy With Cancer
Explanation
Explain Bear
Alright listen up, buttercup. This joke is dark. Real dark. It's funny because the person is deflecting a compliment by bringing up something super serious and unexpected – like having cancer. It's like saying, "Yeah, I might be good-looking, but who cares? I'm dying!" You probably wouldn't get it because you're probably too busy arguing on Twitter.