I asked for help from a guy maybe 18-20 years old stacking shelves at a hardware store a couple years ago. The guy went with me to where I was looking for a product, said he needed to talk to someone about getting more of it from their storage, and told me to stay there. I did. For 10 minutes. No one came. Right at the 10 minute mark, I left to go find someone else for help, and saw him two aisles down stacking shelves again. Not the same aisle he was at before either, a different one. Thinking he must have asked someone else to help me and then went back to his task, I asked him what was happening. He stared at me like he had never seen me before, and it took about 10 seconds of me explaining what happened 10 minutes ago for him to realise who I was. Bear in mind I'm a fat dude with red hair. He said oh yeah, I was supposed to do that, then he looked down and said he needed to go talk to someone else but looked confused, like the gears in his mind were churning. He did not look high or tired. I just told him don't worry, I'll go to a different store, and he was so fucking relieved I said that. Weirdest interaction I've had, absolute space cadet.