What does a Necromancer need a blanket for?

I'm always sleeping under a blanket.

Am I going to die soon?

Added 3 minutes later
No, it's all nonsense. Normal Necromancers always sleep in coffins or caves. They always sleep under a blanket and keep warm, like in little houses, while their undead minions stand at the entrance and ward off thieves/clowns/inquisitors. It's actually quite nice - sleeping under a blanket, and even cuddling with a teddy bear. Sleep during the day, get up at night, and you can perform rituals again.