"I Like That" singer Houston -- who famously suffered an emotional breakdown in 2005 and gouged his own eye out with a fork -- was arrested this week in L.A. for DUI ... and TMZ has obtained his mug shot.
Law enforcement sources tell TMZ, 28-year-old Houston -- full name Houston Summers -- was driving erratically near Malibu Wednesday in an older-looking SUV ... so cops pulled him over.
According to law enforcement, officers approached the vehicle and it smelled of marijuana. When police asked Houston questions, we're told his answers were incoherent.
Houston was then placed under arrest on suspicion of DUI. Sources tell TMZ, cops believe Houston was driving under the influence of drugs ... not alcohol.
The singer was released from jail Thursday. Calls to Houston were not returned.
As for Houston's 2005 breakdown -- the singer reportedly first attempted suicide by jumping out of a window while under the influence of PCP. His friends stopped him, but when they locked him in a first-floor room, Houston gouged his eye out with a plastic fork.
Houston was institutionalized for a year following the incident. He has since attributed the whole thing to "the pressures of fame."