I'd like to know the same thing. Hrmm.------------------
The girl he had dragged along to the pub with him had grown to loathe him dearly over the last hour, and it would probably have been a great satisfaction to her to know that in a minute and a half or so he would suddenly evaporate into a whiff of hydrogen, ozone, and carbon monoxide. However, when the moment came she would be too busy evaporating herself to notice it.
-Douglas Adams, The Hitchhiker's Guide to the Galaxy