If you imaginatively understand how these newly created by internet/ textmessager, then you should be one of them too:
SFUSD
POS Parent Over Shoulder, PIR Parent In Room, BRB Be Right Back, TTFN Ta Ta For Now, KOTL kiss on your lip, OSF Oh Shot I forget, RUMOF are you male or female?, IMNWY I am nothing without you.
and
truancy -- absence to school including late,
Medically
likewise: NPO is no food by mouth, ADA against Doctor advice, AD advance directive,
SFUSD
POS Parent Over Shoulder, PIR Parent In Room, BRB Be Right Back, TTFN Ta Ta For Now, KOTL kiss on your lip, OSF Oh Shot I forget, RUMOF are you male or female?, IMNWY I am nothing without you.
and
truancy -- absence to school including late,
Medically
likewise: NPO is no food by mouth, ADA against Doctor advice, AD advance directive,