I have three.
The first I went to visit friends at Durham uni, last thing I remember was taking pictures of two random girls exploring each others tonsils and then arguing with a bloke from Zimbabwe about his racism. I woke up in the wrong building at my friend's halls of residence, lying in front of the door of a random flat. No keys, wallet or phone. Walked back to the car and the interior, along with said wallet, keys and phone were covered in my own vomit. Turns out we'd got back to the halls whereby i'd demanded to sleep in the car, promptly thrown up in it and all over myself and tired unsuccessfukky to find my way back to his flat. It was my mum's car but thankfully a convertible so we drove back with the roof down to get rid of the smell and got it valeted before she found out.
Another time I was staying at a friends in Leeds after a night out. True to form i'd demanded to stay till it closed so he went home. I tried to walk back to his by taking a shortcut through Hyde park. Walked totally the wrong way and ended up climbing through people's back gardens until I found the road I was meant to be on, then in my hammered state walked the wrong way down it and ended up back in Leeds city centre in daylight. I got on a bus and looped around until my mate answered his phone so I could get in.
At a carnage night at uni, no idea what happened during the night but woke up in some bushes in a park at 8 the next morning, covered in mud and a lot of blood. My carnage tshirt had been turned into a croptop so I had to walk back to halls looking like a right bell. Apparently i'd gotten in a fight with some bloke who wouldnt leave the girls alone and the blood from his nose was all over my shirt, then legged it, no clue what happened between then and waking up in the Bush.
I've done my fair share of pissing in people's houses, but the best was a bloke once pissed and shat on a friend's Xbox at some point in the night.