In the days of floppy disks we told a girl that we could tell which one she'd copied stuff onto because the data had made it heavier. I also told a director in the days long before Wi-Fi that I could see what was on his laptop. He was the Director of IT and fell into a panic until my boss told him I was pulling his leg. The UK sitcom "The IT Crowd" the techies said that they had been loaned the Internet and when the boss picked up the box, she said that it didn't weigh anything and they told her "Data doesn't weigh anything" or words to that effect.
I guess I'm way off topic now :offtopic: