ISLAMABAD: Pakistan's mobile operators were Sunday scrambling to block text messages containing any of over 1,600 “obscene” terms banned by the the country's telecoms authority ahead of a Monday deadline.

The list, including words from “quickie” to “fairy” to “Jesus Christ” and obtained by AFP, was distributed on November 14 with operators given seven days to comply, but has met with widespread derision and a threat of legal action.

“There are more than 1,600 words in the list including indecent language, expletives, swear words, slang etc, which have to be filtered,” an official at a telecoms firm told AFP, speaking on condition of anonymity because he was not authorised to speak to the media.

Other words and phrases on the list of 1,695 terms, issued in English and Urdu, include “monkey crotch”, “athlete's foot”, “idiot” and “damn”, as well as “deeper”, “four twenty”, “go to hell”, “harder”, “looser” and “no sex”.

The letter accompanying the list says networks must also submit monthly reports on implementation of the ban. It is the first time the country has sought to censor text messages.

Campaign group Bytes for All said Sunday it would challenge the ban in court, saying it violated rights to free speech and privacy.

“We are now witnessing a new ruthless wave of moral policing in the digital communication sphere of Pakistan imposed by the Pakistan Telecommunication Authority,” country coordinator Shahzad Ahmed told AFP.

“By developing extremely detailed lists of allegedly 'offensive' words and forcing telecom operators to filter them out to make our society moral and clean, PTA has not only made a mockery of itself but also of the entire country and its government,” he added.

The move in the Muslim-majority country sparked derision from local Twitter users using the hashtag #PTAbannedlist.

“Maybe all Pakistanis should keep sending expletive-filled text msgs every 10 minutes and wait for the networks to collapse,” tweeted user Shoaib Taimur.

Another Twitter user, Fariha Akhtar, posted: “Damage to #ebanking?” after the word “deposit” was discovered on the banned list.

“The #PTABannedList is also an excellent opportunity for our street language and slang to evolve and grow by coming up with newer abuses,” tweeted blogger Shahid Saeed.

“Seriously, why aren't we protesting this ban? Jokes apart, they've banned words that have no vulgar implications whatsoever,” tweeted Sara Muzzamil.