Definition of "smthng"

Thirdly (and this is what seems so simple, yet is the most difficult) need to create a human story, smthng about which you can’t say: and then Sacha fell in love with Boria, and so forth. […] in Benoît’s village, and finish either by their leaving (but that would be too good to be true) or by smthng that shows the friendship between Jean-Marie / Hubert (first I had thought: love scene Jean-Marie & Brigitte, then feared it would be too banal).

2008, Olivier Corpet, Garrett White, editors, Woman of Letters: Irène Némirovsky and Suite Française, Five Ties Publishing, Inc., pages 146 and 148

Can I say smthng? With yr permission? […] Ok. It’s smthng soft.

2012, Paromita Vohra, “The Romantic Customer”, in Altaf Tyrewala, editor, Mumbai Noir, Akashic Books, part I (Bomb⸝ay), pages 41–42

Omg, thank you. Thank you sm. Can send smthng rn.

2019, Gemma Files, “The Puppet Motel”, in Ellen Datlow, editor, Echoes: The Saga Anthology of Ghost Stories, New York, N.Y.: Saga Press, page 327