In all seriousness the most likely suspect would be PCP.
"Psychological effects include severe changes in body image, loss of ego boundaries, paranoia, and depersonalization. Hallucinations, euphoria, and suicidal impulses are also reported, as well as occasional aggressive behavior.[19]:48–49[17] Like many other drugs, PCP has been known to alter mood states in an unpredictable fashion, causing some individuals to become detached, and others to become animated. PCP may induce feelings of strength, power, and invulnerability as well as a numbing effect on the mind."