Last night my uncle flew in and i drove to pick him up, we got back to my house and we sat in the basement and caught up (havn't seen him in 3 years). While i was doing this i was completely sober.. or so i thought. I don't know what caused it but when i looked at him at first it was normal but then he started to change, sometimes he was just morphed, but other times he had different hairstyle and clothes. I would blink and it would be normal again. I have been dry on weed for 3 days, and the night before i did some dxm. I don't think that any drug was still affecting me though, but i don't know. What could have caused this? (I might have been tired, but i have never experienced anything like this when i was tired before).