The annoying noise emitted from a computer or other communication device during an online chat session such as facebook, msn or skype when the subject recieves a new message.
also know as an electronic fart, or an E-fart
john: dude, your computer keeps E-farting.
joe: yea im chatting with brad on facebook, he wont leave me alone.
john: something in your room is emitting large quantities of E-flatulence.
joe: yea sorry, its katy. i just broke up with her and she wont leave me alone.