yeah, as someone who stays up for many days at a time, i'd start to see and feel things that weren't there, the weirdest sound i hear is the IRC beep.
on the topic of drugs, i once walked into my brother's room to wake him up because food had came, he had taken some kind of drugs that were making him trip out. he just was feeling the wall and calling out to different names. he's a drug dealer and is in and out of jail so stay away from drugs kids