Interesting - Meaning of this song/Timothy Leary link?
"In 1981, he (Timothy Leary) had a cameo in Cheech and Chong's film Nice Dreams, wherein he played a doctor who had "the key" to Cheech's escape from a mental hospital. Rather than giving him the key to his straightjacket, however, he gives him a dose of LSD."
Tool have used Timothy Leary as a subject of inspiration before... so I found this interesting.
Especially how this song/Lost keys are about keys, LSD, a mental hospital/doctor, etc