Hrm i dont think my "Parties" end really badly actually, heres an example of the usual.
I rarely drink, but when i do i can drink almost everyone i know under the Table, so to speak, except my Sister, but i still think she stores half the alcohol in her tits so she has some for later (Yes, hers are rather big and its my way of making fun of her). Anyways, usually i have a sort of get-together with my Friends, like everyone is invited and we do a lil party, drink, talk about all kinds of weird shit until we start with our usual practice of betting to the last Man/Woman standing, ergo, coma-drinking.
The last one to pass out wins. Regardless of who wins though, by the time one of us wakes up the seating arrangement changed, for example, before we passed all out, we could have been sitting opposite of each other, like girls one side and the guys on the other side, i usually wake up in the lap of one of my female friends, despite that my girlfriend is also there (hardly suprising since its my house and she lives there with me)
I dont really know what exactly happen in the time everyone is passed out, or at least in the time i am, but except for the waking up in a position i was very sure not to have been in beforehand nothing bad or weird really happens, no one got ever drunk and it ended with anything sexual for example, tho for some reason at times i tend to wake up half-naked anyway. Its confusing to say the least..but thats about how all my parties go down. Most suprising part is, never has anyone thrown up before, during or after the party that i am aware of, so unless some unseen entity removes that and changes the seating arrangement, i cant explain to myself what exactly happens.
On the good side however, or rather on the unweird side, im usually, at least when it comes to outside parties, the designated driver, despite sometimes drinking as much as the rest of my mates. Once i got held up by the police, driving my mates home. So since i was driving i had to do the little alcohol test, walking on a straight line, tapping your nose with closed eyes etc, everything fine, then they get the idea of using that alcoholtest-thingy, i had about 2 Promille. I will never forget the look on the cops faces for the rest of my life, since apparently i was driving alot better than some people who are totally sober. Needless to say i got a stern warning but was allowed to drive my mates home, since me driving was the best alternative XD