text chat - chat in which the chatter’s input is typed and not graphic. Usage example: "Hey, anon, you wanna post so many pics go to a pic room. This is text chat", "I still prefer text chat. I like to bypass all the visual distractions and plug straight into the person's intellect."
top - in sexual intercourse, the one who penetrates. IN BDSM, see domme.
TY - thank you.
TA - thanks again.
TAT - turn around time.
TC - telephone call.
TCP/IP - Transmission Control Protocol / Internet Protocol.