A person who insists on talking or texting but doesn't provide any meat to the conversation, thus wasting your time.
John: "I'm so fed up with Teresa; she's a total phone vegan."
Conversation of a phone vegan:
Teresa: Hi.
John: Hey, what's up? How have you been?
Teresa: Nuthin. Good.
John: ... That's good. What did you want to talk about?
Teresa: Idk.
Conversation of a phone vegan:
Teresa: Hi.
John: Hey, what's up? How have you been?
Teresa: Nuthin. Good.
John: ... That's good. What did you want to talk about?
Teresa: Idk.
by Captain Battletoads, Ph.D. December 13, 2012

SIP - (Session Initiation Protocol) is a signaling protocol used to create, manage and terminate sessions in an IP based network. A session could be a simple two-way telephone call or it could be a collaborative multi-media conference session. This makes possible to implement services like voice-enriched e-commerce, web page click-to-dial or Instant Messaging with buddy lists in an IP based environment. SIP has been the choice for services related to Voice over IP (VoIP) in the recent past. It is a standard (RFC 3261) put forward by Internet Engineering Task Force (IETF). SIP is still growing and being modified to take into account all relevant features as the technology expands and evolves. But it should be noted that the job of SIP is limited to only the setup and control of sessions. The details of the data exchange within a session e.g. the encoding or codec related to an audio/video media is not controlled by SIP and is taken care of by other protocols.
by David Cholagh April 19, 2007

A person or friend who will call your cell phone to rescue you from an uncomfortable or otherwise undesireable conversation with someone else.
Thank god my phone goalie stepped in, because if I had to listen to one more story about how she named her cat "Pilates", I was going to pull my own arms off....
by hemmingwayredux June 22, 2011

Basically the Infinity Stones but with phones. When you're using your phone in class and you teacher comes rushing like Thanos to take them away.
My teacher is currently on a quest to find all of the Infinity Phones. With one snap he/she will destroy 1/2 of the happiness in school.
by DonaldJTrumpster June 16, 2018

the act of checking you side and then back pockets in search of your phone usually causing you to accidently perform a portion of the macarena.
by mynamedontmatter October 19, 2009

When a person is mentally incapable of functioning whilst having any sort of mobile device in front of them. Typically characterized by open, slack jaw, glassy eyes and a zombie-like sway or teeter.
by Baxter Wilde August 22, 2014

Someone who attends a live music event and insists on filming the performance on their phone instead of enjoying the atmosphere. Exactly what these dipshits do with the footage after the event is unclear but it's likely it just sits on their phone, acting as a reminder of the performance they attended in person but largely watched via a 5 inch screen. The Phone Wanker is further characterised by the person filming the event with their phone in a vertical/portrait orientation, thus rendering the footage unusable for any purpose other than viewing it on their phone. Sadly all attempts to capture the event for prosperity (or perhaps bragging rights) are rendered useless anyway since the diminutive microphone on the phone is inadequate when faced with the venues high powered speaker stack.
I went to see Rag n Bone man in concert last week. Amazing gig but I was surrounded by Phone Wankers who insisted on filming it!
by JayWon April 21, 2017
