LOL! I love lightbulb jokes... yes I'm that corny.
Q: How many Serbs does it take to screw in a light bulb?
A: Two--one to shoot the old bulb out and one to screw the new one in.
Q: How many Pentecostals does it take to change a light bulb?
A: 10, one to change it and 9 others to pray against the spirit of darkness.