The act of imagined sexual intercourse via the more mundane medium of text - be it in the form of traditional book-bound text; text message on your mobile; or whilst being groomed by Nigel, 52, from Dudley over the internet.
This is linked to the increasingly-common physical ailments of internet hand and mobile claw.
Bigtits69: "As I nibble on your balls, I imagine your member in me..."
MandingoStud31: "Nibble baby, nibble!We getting some textual intercourse tonight!"
Guy 1: Hey bro, I heard that your date couldnt make it, so you didnt get laid
Guy 2: It actually turned out okay, she felt bad so we had some textual intercourse