A bunch of sounds, compiled into a torrent, that when listened to for a certain period of time, will make you feel a certain kind of high. There are different versions, for whatever different drug you feel like feeling like you just did...if that makes sense.
I've never done it, but I know people who have.
"Gosh golly! This sure is a large hole to dig."
"You should get that iDozer! I have an iHammer and it's really handy!"