San was… well clueless. he was not innocent, but god, at times you think he was. It was one day where San had gotten a bruise from his friend Hongjoong when they were playing with steel pipes. It was coincidentally located in his neck, right upon his pulse. You being curious asked the poor boy: “is that a hickey?” while you were brushing his hair.

Being his clueless self, he had blinked and asked you:

“Hickey? What’s a hickey?”