a person who seems like a very nice person, all sweet and fresh, like a berry. then you get to know them, and it turns out they are extremely nasty, like a big wet fart.
She is a fartberry, because she seemed very nice. then i started to talk to her, and she was a fucking ass.
Fagberry (pronounced / faaagberrie/ ) is a ritualistic device commonly used in mating rituals among the primate species of homo hoity-toity. The male (fag) usually shows it to the feemale (bitch) to distract from its puny penis. Reports have been made that the fagberry may also be used for flawless internet connection. This however was never conclusively proven.
Fag: "Hey! Check out my new fagberry. It´s got a trackball which is totally convenient and durable. Can´t wait to download some gay pornography with this..."
Normal person: "Fuck you, you imbecil! Never heard of an iPhone before, prick?!"
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.