If L went to the dentist.
For the first time in years, L Lawliet was in a dentist's office, due to Light's insistent prodding. The assistant called the panda-like man up and he sullenly entered. As Light read a magazine in the waiting room, he heard shrieks erupting from inside. His chocolate brown eyes widened as he listened to the terrified screams, and L came out thirty minutes later, looking amused.
"Ryuzaki, who was that screaming?"
"Oh, the dentist."
Light shook his head empathically for the poor dentist, and shuddered. L was more terrifying to a dentist than Light with a Death Note.
Perhaps it'd been nicer to have killed the poor man with his notebook instead of submitting him to L.