It can be seen by the human eye, but cant be touched. It is as light as air, and if it was put into a barrell of water, it would make it lighter. What is it?
"Your Dads got 1, but your mum uses it. The pope has 1, but doesnt use his. Arnold Schwarzenegger has a very big 1, and Michael J Fow has a very small 1". What is it? No rude answers please