Nah, it's a well known fact that mobile phones and alcohol definately DON'T mix!
This one time I rang this really nice girl up and asked her out when I was somewhat pissed (she said yes) and we had nice long trashed chat but by the next day I had COMPLETELY forgotten about it.
Much to my disgust I repeated this exact same procedure identically about a month later only this time she was like "WTF? You already asked me that and i gave you the answer!" then she started crying. Needless to say I was very confused and promptly terminated the converstaion feeling like a total twat (I was too embarassed to ever call her back!) The night went on and by the next day I had COMPLETELY forgotten this conversation as well!
Then for some reason about three months later I saw her down the mall and thought "Hmmmm, that girl always was really cute, wonder why i've never asked her out?" something must have triggered my memory, and suddenly it all came flooding back to me, and I was like "Oops! that's right!". Strange how our minds work.