Dementia Defined
1. Deterioration of intellectual faculties, such as memory, concentration, and judgment, resulting from an organic disease or a disorder of the brain. It is sometimes accompanied by emotional disturbance and personality changes. 2. Madness; insanity.

From Page 6:

To prove to fellow restroom users he's not up to any funny business, Owen Wilson has taken to relieving himself with the stall door open.

From WENN:

Troubled star Owen Wilson is seeking solace from his recent suicide bid in Jessica Simpson, according to reports. The Wedding Crashers star was rushed to the hospital after slashing his wrists at his home in Santa Monica, California two months ago. But Owen is recovering from his recent troubles by dating Simpson, according to New York gossip column PageSix. The publication reports the couple dined at the Huntley Hotel in Santa Monica before retiring to his Malibu home. A source says, "He couldn't keep his hands off her."

Owen Wilson's next stop on the dementia train?  A stint on "Dancing with the Stars," followed by urinating in bottles at the dinner table, and then gnawing on his toenails during lovemaking sessions with Natasha Lyonne. Says Wilson, "Stop driving that train on the dog's head."

Huh?

Get some help, brother. I thought a suicide attempt was bottoming out, but canoodling with Jessica Simpson is somehow even lower than rock bottom -- you're hurtling toward the Earth's core, now.  Do you really want to wake up every morning with a horse-grimace staring at you? And from the looks of the image above, the plastic in her face looks to be sliding south.