After Sherlock and John can't find a suspect at a restaurant, Sherlock thinks they can find them at a gay couples' bar where they need to 'Kiss to Enter.'

After L figures out his relationship with Light, L gives something special to Light for his birthday.

Sherlock convinces (more like forces) John to engage in a little 'experiment' of his...

Light has wet dreams about L and tries to put a stop to it. He tries to push the detective out of his mind, but L manages to stay. Friction between the two grows, until another kind of friction blossoms...