The Pakistan Telecommunications Authority (PTA) has told mobile phone companies to begin blocking text messages containing "obscene" words.
Mobile phone companies Telenor Pakistan and Ufone confirmed to the BBC that the PTA has sent them a "dictionary" of banned words and expressions.
The PTA has reportedly ordered operators to begin screening text messages by 21 November.
Ufone say they are now working on how to block the offending words.
Some of the allegedly banned words
Wuutang (a presumed reference to American rap group the Wu-Tang Clan)
They have picked some strange words to block and some strange phrases.
Can anyone explain whats offending about some of them or am I leading a sheltered life?