Homisomniac 

Someone who murders people while they are sleepwalking.

I heard Tom killed Karen while he was sleepwalking. He must be a homisomniac.

Homisomniac by TDYVK May 21, 2011

Hominsomnia

Staying up for more than 24 hours and going on a killing binge because you can't sleep.

Did you hear about Alaina?" "No, what happened?" "I heard she was suffering from Hominsomnia and killed like 20 people!" "OMG!

Hominsomnia by anilesfizzy July 28, 2011