One time, after smoking weed for the majority of a 48 hour period, I truly forgot how to walk. We were in this hotel, and it was getting near check-out time. I was planted on a couch, and I was scared to stand because I knew I wouldn't be able to anchor my weight and take steps. I was just that blown. When I finally stood, I immediately fell against the wall. After about 5 seconds, I was able to resume walking and packing. Scary feeling.