Look around you and I bet you will see someone sporting a mobile phone in their hand. Smart, small, sleek sexy phones with myriad ringtones, games, screensavers and what not.
But what is noteworthy is the fact that advertisements of mobile phones hardly speak about the phones abilities as a medium of communication. Ads talk about high resolution camera, motion camera capabilites, WAP/Bluetooth enabled phones, radio, MP3 player, media streaming capabilities etc etc etc. So simply put, the phone is described as being anything but a phone. This I think is a perfect example of recipriversexclusion.
The most bizarre of mathematical concepts, a recipriversexclusion, a number whose existence can only be defined as being anything other than itself.
Update: The mobile phone can now be used as a railway ticket booking device also. The Indian Railways has announced a scheme where one can book tickets via SMS.