One late night in Tokyo, Japan, L and Light stumbled home drunk with this little red headed child following them. L was drinking some form of high sugar and caffeine soda drink that light had spiked with half a bottle of vodka. Light was just plain old drunk on brandy and some other forms of unnameable alcoholic drinks.
By the time they got home it was about 3am. The little red headed child snuck inside their home via the large open window which acted like a door that they never closed anyway. L staggered and slightly bumped Light. He took offence to it and slapped him across the head.
"L! WHUT TAH FECK WAS THAT FOR, ASS." Light yelled with a slur, since he was really drunk at the time and stuff.
Confused, L replied, "Wut? I didn't do nothing…."
And WHAM! Light shoved L into his room.
At this time the little red head child was making herself very comfortable in the darkest corner of Light's room with a little book and drawing pencils intending to get inspiration for her next masterpiece.
L and Light were still arguing and yelling at each other and the little red headed girl was wondering when they'd actually do something 'interesting'. She grinned maliciously.
At this point L was getting rather sick of this and decided quit with the fight and sit on the bed while Light screamed abuse at the wall thinking it was L.
L was rolling his eyes and thinking "What a fucking retard." Then he screamed at Light, "HAY YOU, I'M OVER HERE, LIGHT-HEAD"
Light turned around and looked at L with a dirty grin, THEN JUMPED ON HIM.
The little red headed girl began to draw L and Light in almost impossible positions imagining all the hits she'd get on Deviant Art if she changed the people to Mello and Matt instead.
Because describing what happened next would just be perverted and sick. All I'm saying is that L and Light pleased the little red headed girl with many different things to inspire her artwork.