We even threw in a few of our own to cover all bases.
When you only know someone from their social media (usually Instagram or Twitter) but want to spark up a conversation via private message.
The difference between acronyms and shorthand is that with acronyms, (for example, 'ESP' is an initialism for 'extra sensory perception' whereas 'esp. The online practice is to refer to shorthand, initialisms, or abbreviations as acronyms.
The majority of the expressions you see above are not acronyms, but rather shorthand used while text messaging or IMing.
MNer is a mumsnetter, and MNHQ is Mumsnet headquarters MW midwife NAK nursing at keyboard (breastfeeding while Mumsnetting) NN no NT neurologically typical NWOC nanny with own child OH other half OT occupational therapy/therapist OTOHon the other hand OTT over the top/overseas trained teacher OP original post/poster OWother woman PBPpreviously banned poster PFB precious first born PG pregnant PIL parents-in-law PITA pain in the a**e PM Private message PMSL p**s myself laughing POAS pee on a stick (take a pregnancy test) POV point of views RF rearward-facing (as in car seat) RL real life ROFL roll on floor laughing RTFT read the f**king thread SAHM stay at home mother SAHP stay at home parent SALT speech and language therapy/therapist SENCO special educational needs co-ordinator SIL sister-in-law SIOB sharp intake of breath SN special needs SPD symphisis pubis dysfunction STBXH soon-to-be-ex-husband SWI shagging with intent (trying to conceive) SWOI shagging without intent (not trying to conceive!