Ughh

Brian has turned into a terrorist. He gets up at all hours of the night, flipping on the lights, disturbing everyone’s sleep, jumping on anyone with a pulse. Max keeps yelling at him to turn off the light and leave him alone. Kevin ran away and said, “Don’t bother me until the sun is up,” (I’ve been trying to teach Brian that) and I stuck my head under the blanket and tried to sleep with him playing leapfrog over me.
I’m not sure what to do to fix it and it is really hard to be rational or reasonable on very little sleep. Any suggestions?