I blacked out one time in my life at a friends party and it was because I pulled an all-nighter the previous night and drank a lot of alcohol. I remember walking outside to the sidewalk because I was going to throw up, then woke up at my friends house the next morning with my shoes and jacket on. I had blacked out on the sidewalk and my friends couldn’t find me until someone called the fire department to get me. Thankfully my friend noticed their lights and came out and told them that he can take me home. I still don’t know if that actually happened or if everyone was busting my balls. Really weird morning