A laptop used solely for the purpose of checking facebook. All it needs is a folder for pictures and internet explorer/firefox.

A person will see a laptop around, and identify it as a 'portable facebook machine'

Often times, people who are facebook whores sit together and use their portable facebook machines and stalk the same cute person of the opposite gender.

Large, beautiful breasts that are keep well consealed and initially appear to be much smaller and less impressive than they actually are until unleashed.