An IT geek is drafted into the army and sent to the firing range for target practice.
He's given a rifle and some bullets, and told to fire at the target.
After loosing off a few shots, the report comes back that he has failed to get any on target. He looks at the rifle, then looks at the target. Then he puts one finger into the end of the rifle, and with his other hand squeezes the trigger.
His finger is completely blown off.
The geek yells towards the target area, 'It's leaving here just fine. The problem must be at your end'.