Burning

I keep having this dream were I see this office blowing up. It starts out where you see the office window and outside you can see that it is a clear blue sky. Then all things turn into Hell.
All of a sudden the clouds turn bloody red with orange flames flying out. Inside the office, where no people are inside, it explodes.
Computers explode with such force that if you were standing twenty feet away the glass coming out of the screen would land on you and melt into your skin. Even as the computers are exploding they begin making evil electronic laughing noises.
All of a sudden during the explosion you can hear twisted voices filling the air. The middle of the room explodes out like a volcano erupting its lava.
Blood begins gushing out of the walls and the whole room is filled with evil computer noises, voices, blood, and fire. Then all of a sudden the room collapses in its fiery bloody inferno.
Down it goes getting sucked into a black, twirling pit that you cannot see into. No longer seeing the room blood begins exploding out of the eerie dark hole.
Screaming in the blood is a sound like no other. Voices of all ages, sexes, and races scream in agony. The blood begins covering my room, flying onto my bed, and into my alarm clock.
Then all of a sudden I wake up. My penis is very hard and stiff. Sometimes I had ejaculated during this dream.
What does this dream mean?