Of course, Light was almost as thin as L, but his immune system was likely much better, considering their diets. However, he wasn't about to let L take all the warmth. He tugged at the blanket himself, holding it around his form as much as he could.
Besides, Light was sure he used his extremities much more than L did. L could afford losing his legs and penis, at the least, but Light wasn't about to go without those in life.
"Well, then, I suppose we're both in the same boat....or blanket...whichever you prefer."