I was visiting Dan at his shop today. We were chatting away, when he suddenly gasped and doubled over, clutching the right side of his chest.
Me: Are you ok?!
Dan: Ow, chest pains!
*pause*
Dan: Ah that's better. Felt like I was being stabbed. I think it was my heart!
Me: ...
Dan: What?
Me: Your heart's on the LEFT side of your chest.