What is the difference between an upside down heart and a bum. AI answer. AI even spelled humour wrong. Maybe AI is the butt. The upside-down heart symbol can be seen as a playful or ironic representation, while a bum typically refers to a person's backside. Both can evoke humor or a lighthearted perspective, but they...This is a truncated preview of the original post. Press here to view the full post. Post Comment Receive notifications Add a comment...