The phone call you make when you are absolutely smashed, to a person that you really love but have been recently a dick towards him/her. Usually during this phone call, you apologize and let the best of you to come out so you can say safely afterwards "I'm not a nice guy, that was the alcohol talking". Drunken Phone Calls are usually made by guys to their female friends.
-Him: Hey I know I have been a dick the last few days, sorry about that. I don't know what I want sometimes. This is the nicest I can be, during a Drunken Phone Call.
-Her: It's okay. I still love you. Just do me a favor and don't sleep on the street tonight, will you?