Same happened to me after 2.5dl of a mix that contained:
beer, vodka, dalmatino(liquer), blacky(liquer), red vine(2 tipes), white vine, kruskovac(pear liquor or schnapps dunno), 2 types of orange juice, cola, jegermaister and maybe something else. Next thing I remember after drinking that is waking up in my bed next morning. I don't remember how and when I got home although it's 45 walk to my house and my friends told me I was with them for at least an hour and a half. Oh, and I had my one and only hangover that time.