Matthew McConaughey, in disguise, tries to get random people 'high'

In his new film The Beach Bum, Matthew McConaughey plays a guy named Moondog who is a big marijuana fan.

It makes him the perfect accompaniment to Jimmy Kimmel's regular segment, "High Witness News," which gets people to lie about being high.

Despite feeding random people on the street "THC infused" ketchup and baby food, no one seems to figure out that Moondog is a famous Hollywood actor. Except for McConaughey's co-star Snoop Dogg, of course.