a bit of a brain teaser

You are in a large room with a hundred people. There are no windows or skylights. The only way in and out of the room is through a single reinforced steel door. The door is closed but unlocked and the light is switched on.

The door has an electronic lock that is light sensitive, when the light is on the door is unlocked, when the light is off the door is locked.

The bulb blows and the room is plunged into darkness, you and the hundred people are locked inside......

How do you get out???

NB. Everyone inside the room is naked and not wearing any jewelery/hairclips etc etc (deviants behave, I know what you're thinking). No one else knows any of you are in there so will not come to your rescue. There are no items other than people to be found in the room.

Enjoy

are you gonna give us the answer??

i know, i've been thinking about this since you posted it and feel stupid!

Easy,

Take the 2 boy scouts in the room, rub them together to create fire.

find the spare bulb