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To send a text message while performing a sexual act.
Would you mind if I send a quick stext?

Donna is always stexting when she's with her man. I was like "Girl, just call me later!"
by Texty Texterson June 28, 2014
Transitive Verb-
The act of dirty talking via a text message. Similar to cyber sex.
My girlfriend and I attend different colleges, it's alright however, considering we stext everynight.
by One Sadomasochistic Coprophile January 24, 2009