When you non-stop i chat with your girlfriend and nickname her B for "baby" in your contacts list for your phone. Symptoms include facebook scrabbling with her or trying to beat her high score on farmville.
Boy: Hey Baybeeee!
Girl: Hey B!
Boy:Am I clingy?
Girl: No you're not... sure you're kinda needy
Boy: Hey baybeee you wanna hear a sad song? I just saw you this weekend but I miss you already!
GIrl:no I don't wanna hear a sad song
Boy:Baybee I gotta go harvest my crops on farmville I gotsta go! bye baybee!
Girl: K bye B get to level 30!