Credit:PA Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings. A spokesman said: “We have recently had numerous reports of young people sharing sexual, naked or semi-naked images of themselves, also known as sexting.”Therefore, were urging parents to talk to their children about the dangers of sexting as it could lead to embarrassment, blackmail or even a criminal record.”We know talking about sexting with your child may feel uncomfortable or awkward but it is incredibly important to discuss the risks, teach them how to stay safe and explain how these reports can use up valuable police investigation time.”The spokesman advised: “Talk about the Granny rule would you want your Granny to see the image youre sharing?”Talk about whether a person who asks for an image from you might also be asking other people for images.If children are sending images to people they trust, they might not think theres much risk involved. Use examples of when friends or partners have had a falling-out and what might happen to the images if this happens.” They codes in fact mean ‘Whats Your Real Name’; ‘Parent Alert’; ‘Lets Meet in Real Life’; ‘Mum Over Shoulder’; ‘Talk Dirty to Me’ and ‘I Want Sex Now’.Humberside Police are now promoting the list, which includes 112 codes that children use while exchanging lewd images and messages, originally compiled by the Police Service of Northern Ireland.They also include NIFOC (Nude in Front of Computer) GYPO (Get Your Pants Off) FWB (Friends with Benefits) and KPC (Keeping Parents Clueless).Ways of warning that mum or dad is around include PAW (Parents are Watching) POS (Parents Over Shoulder) and CD9 (Code 9, meaning parents are around).Worryingly, many are designed to arrange real life meetings between strangers such as WTPA (Where the Party At?) RU/18 (Are you over 18) RL (Real Life) and ADN (Any Day Now). Making parents aware of the cryptic messages, which also include drug references, is part of a new purge by the Humberside force on sexting. A police force has issued a ‘sexting’ dictionary to parents to help them decrypt the code words children use to secretly exchange explicit messages and photographs.Worries officers have promoted a 112-word glossary of terms that children are using on the internet that are incomprehensible to their parents.Police fear many families would not what was going on if they found letters such as WYRN or P911 or LMIRL, MOS, TDTM or IWSN on a kids phone.