SEVEN HIGHLY ANNOYING TEXTING HABITS (The Stir):

Using "Y" or "N" for "yes" or "no". 
The ridiculously long text. 
The text that says, "Just left you a message."                                                                       

The million texts in a row before you get a chance to respond.  
The Emoji-obsessed texter.                                                                               Using abbreviations to the point of making your text unreadable.                        Having texting be your only form of communication.