There is a spoof that has been floating, or should I say flying around the travel websites in Cyberspace. Check it out:

Derrie Air The website facetiously displays an imaginary airline, which charges by your body weight, as well as the weight of your luggage. Okay, this is all in good fun. But seriously, have you ever considered how the weight of your luggage adversely affect fuel cost. I won't pretend to know the exact answer, but the fact that the airlines are now charging extra for your second bag implies that excessively heavy baggage has an adverse effect on the cost of fuel.

The next time you pack, ask yourself, "Do I really need to bring that?"