One time after a LOT of drinking i spent a good 5 minutes in the bathroom trying to figure out why I couldent find the legs on my pants only to finally figure out that i was, in fact, holding a towel.
I think the closest I came was when I was really high and two times in a row tried to smoke a bowl by sucking in the carb and lighting the mouthpiece. But still I figured it out a lot quicker than this guy.
I once lost a couple hours, the moment I woke up in the bathroom I had zero recollection of the preceeding two hours. From witness testimony I have to venture to guess I wouldn't be capable of dressing myself.