If your teen has a smartphone, chances are they spend several hours a day on text and social media. If you ever look at what they’re actually doing on there, you’ll likely see a lot of innocent “Snapstreaking,” some funny Buzzfeed videos and a bunch of letters and numbers that look like some kind of modern-day shorthand. You probably use some of these yourself:

LOL = laugh(ing) out loud                                 GR8 = great

IRL = in real life                                                   TYVM = thank you very much

IMHO = in my humble opinion                        BRB = be right back

J/K = just kidding                                                L8R = later

NP = no problem                                                 WYD= what you doing?

While most of these terms are completely innocent, some child safety experts warn that there can be more than meets the eye here. Some of this strange texting lingo might double as code for suicidal thoughts, bullying, sex and drugs. “The stakes are high, and today’s parents need new ways to safeguard their teens from the harmful side effects of online interaction,” says Bark safety app CEO Brian Bason.

According to the National Institute of Mental Health, suicide is the second leading cause of deaths for young adults and adults ages 15 to 34. In recent years, the problem of teen suicide has taken on a new dimension in part, due to the proliferation of technology.                

“We teach our kids to look both ways when they cross the street. Don’t talk to strangers. We need to do the same thing for children with digital uses,” Bason says.

Bark analyzes some 10-million teen messages per month across 21 different platforms including text, email, Instagram, Snapchat, and YouTube. Here’s the most recent list of the top “sneaky” terms that teens use according to Bark’s data:

53X = sneaky way to type “sex”           KMS = kill myself.                                  LH6 = let’s have sex                    

KYS =     kill yourself.                            MOS = mom over the shoulder            POS = parent over shoulder            

CD9 = code 9, parents around            GNOC = get naked on camera.             99 = parents are gone                

WTTP = want to trade photos?          LMIRL = let’s meet in real life             1174 = meet at a party spot

IWSN = I want sex now                      CU46 =  see you for sex.                         FWB = friends with benefits               

ADR = what’s your address                MPFB = my personal f*** buddy         PAL= parents are listening

TWD = texting while driving                GYPO = get your pants off

The authors 16-year old daughter weighed in on this story.

I ran a bunch of these by own teenage daughter, who I’ve also tested the Bark service on recently, along with Netsanity, Net Nanny, TeenSafe, Limitly, and many “watchdog” apps over the years. (The perks of being the child of a tech reporter…) She explained that teens use terms like KMS and KYS mainly to describe embarrassment — “I just spilled soda all over my jeans, I want to KMS” — most of the time it’s totally sarcastic and nothing for anyone to worry about.

One former data scientist agrees, “GNOC was typed a massive 4,384 times on Android phones in the US in 2016,” says Brandon Wirtz, now the CEO of AI and machine learning service Recognant.  “In 1,986 of those times the next word was ‘means.’”

Bark’s CEO Brian Bason says that’s why it’s so important to add context and conversation to the shorthand teens use. He says spying on kids conversations simply does not work, but a mix of education, communication, and modern tools, often can. “We’re not just flagging known texting code though, we’re using keywords, data science, and machine learning.  If it detects potential issues, the app sends an alert to your phone via email or text, and then offers solutions to help with the presented issues.”

One former criminal investigator, who is now a father himself, has mixed feelings here. He says that many these acronyms are often more urban legend than daily threat, yet still urges parents to monitor their kids online activity. “Can it hurt to know these texting codes? Probably not. Parents should be monitoring their children completely. If you’re not monitoring your kids, no knowledge of acronyms fake or otherwise will help you.”

Whether you plan to monitor your kids or are want help deciphering the latest text codes, online website Netlingo is a great resource. It even hosts a curated list of “the top 50 acronyms parents need to know.”

After this story first ran in USA Today, several teens reached out to let me know about other texting codes that I didn’t include in this story. One teen even sent this amended list via email (she apologized for the cursing and coarse language, and so do I, but they are what they are…).

  1. oml- oh my lord
  2. smfh- shaking my f***ing head
  3. dsl- d**k sucking lips
  4. plug- usually refers to a drug dealer or the “hook up”
  5. snaphoe- a girl usually, who uses snapchat to strip/send nudes for money
  6. mollywop- the act of slapping (usually a female) across the face with one’s penis
  7. basic bitch- a term some take pride in but others use as an insult, a girl who drinks starbucks, uses the snapchat dog filter, wears uggs, usually an attention whore.
  8. butterface- a girl that’s got a great body, but an ugly face. “she’s got a rocking body, but her face..not so much”
  9. furry- people that dress up in mascot costumes, usually animals, to congregate with other furries and sometimes have sex
  10. daddy- not a father. a term that girls use to call their boyfriends, with strange almost incest like roleplay
  11. ddlg- daddy dom/little girl roleplay. same sort of thing as what is described above
  12. dick me down- a term used when a girl wants to have sex
  13. a zip- an ounce of weed/sometimes coke
  14. cheef- a vape
  15. that loud/dank- weed

If you know of any others, or have questions, please send comments in the form at the bottom of this page. I read all of them!