A character in Grand theft auto san andreas voiced by Peter Fonda. The Truth is a parody of 60's hippies, growing fields of marijuana, smoking from bongs, and searching for aliens.
Example: Joe: "Yo dude, did you smack that chick for lying to you about her cell being lost?"
Nick: "No man, I couldn't. She was truthing it. I called up Verizon and checked up on her ass."