<human>: This happened on Boxing Day. I was at my ex-girlfriend's sister's house for a Christmas party and the guys there all got together as they do and start drinking. I'm naturally the shy type so I reluctantly hang out with them drinking to make my ex-gf happy, trying to be part of the family.

As I'm drinking I loosen up having a good time and they keep pouring me drinks. It was Jim Beam self mixed with Coke. Up to a point I couldn't pour my own drinks so the guys were pouring it and I was getting funnier and funnier because once I'm drunk I come out of my shell and do/say the funniest shit.

By the time it was time to go I had finished 1 750ml bottle of Jim Beam, and half the next 750ml. I don't remember the party but I do remember getting into the car.

I remember bits and pieces of what happened next but had to be told all the gory details...

When we got home I couldn't get out of the car by myself. My ex was trying to help me and I ended up hitting her in the head. She's by no means a pussy so she hit me back and dragged me inside with the help of her mum. They got me into bed and I was asleep and then it happened... I was on my back and volcano vomited everywhere.

I ruined my ex-gf's mattress and her and her mum dragged me into the bathroom and put me in the bath. I was naked, vomiting and trying to hit everyone.

Not my best moment....

Can you summarize the given text in a few sentences?
<bot>: I drank too much, became a human volcano, ended up naked in the bath in front of ex-gfs mum.