From "Metronome"

Jin didn’t have a type, per say, there was a spark, or there wasn’t, but sexually, it was important that he could depend on the other person’s body. He didn’t like to hold on to small things. The tactile fragility of sinews and pert bones repulsed him- he hated his own elbows, for example. There was a little knob that stuck out, the subcutaneous olecranon bursa. Bulbous and insistent, like a bottle cap poking out from underneath his skin.