Riddle: A blind girl's boyfriend celebrated her birthday with her. The boyfriend told her that he had no arms when they started dating. When he started singing the birthday song, she broke up with him. Why?
Answer: He clapped while singing her birthday song. If he did not have any arms, he would not have been able to clap. Therefore, the girl realised that he lied to her about him not having any arms and broke up with him.