Derrida (2006) proposes that texts consist of “signifiers” (words) and the “signified”. The ways in which mobile technologies are used have produced a whole new lexicography of signs and numbers as well as conventions for ‘deconstructing’ them. One example of this new lexicography is the number “4” (conventionally the signifier for the numerable “four”). But in mobile-jargon, a kind of written patois, for this generation of higher education learners,this numeral signifies the adverb “for”, as in “Just for me”, which in mobile technology text would be written “just 4 me”