The act of forgetting the last text you sent to someone, making their response seem completely random.
Julie: I can't believe he would do something like that!
Courtney: I know! It was totally rude.
Julie: Sorry, what was rude, I totally have short-term texting.
The act of pretending to send a text message to a group of people by using plural words, in order to either
a) seem less personal, in order to avoid confrontation
b) seem less like a stalker when you text someone a million times a day
Greg recieves a text message from Aimee that says "Hey, whats up homies?"
Greg: Hey, did anyone get that text from Aimee?
Jordan: Nope, she must be plural texting you man.
Greg: Man, she's been doing that all week, but it totally seems impersonal because she keeps using plural words, so she is totally not a stalker.