"No Need To Reply". Used mainly at the end of a text message when you send a text message to someone and they would normally text back with "OK" or "k" or "allright". Used so that when they normally would respond with "ok", it will save you the trouble of getting another text message or looking at your phone that will say "ok"
text message conversation...
without NNTR
John: Hey, I'm leaving in 5 minutes.
Amy: Ok
With NNTR
John: Hey, I'm leaving in 5 minutes. NNTR.
Something to add to the end of an email if there is no need for a further response. It doesn’t mean “don’t respond.” It means “you can respond but you don’t have to.”
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"