[Kenny Bunk]

Of course we are CORRECT. It is the pressure differential caused by gravity drawing down the liquid in the longer, lower end of the petrol purloining device.

However, this Ozscience wannabe boffin is operating in the antipodal region and due to the Coriolis Effect, his mind has been weakened by bath water swirling the wrong way since childhood,crikey, and stone the crows.

Also, being raised on wichitee grubs and chased by salties has been shown to stunt the growth of cerebral cell structures. Treat with Foster's frosty amber fluid (comes in tubes) and bed rest.

[Cyber Liberty]

:^)

Best explanation thus far....especially the Fosters part.