The 19-year-old, who rakes in $350,000 per episode, has released a surprising 15-minute video for the Forerunner Christian Church in which he dubs the risqué comedy "ungodly filth".
"If you watch Two and a Half Men, please stop watching Two and a Half Men. I'm on Two and a Half Men and I don't want to be on it," he says in the above clip.
We thought it was a joke at first, but the child star becomes increasingly serious by invoking Satan in his unexpected rant.
"A lot of people don't like to think about how deceptive the enemy is. He's been doing this for a lot longer than any of us have been around," he says.
"So we can't play around, there's no playing around when it comes to eternity."
And that's just the tip of the iceberg.
The actor, who plays "half man" Jake Harper, is a committed Seventh-day Adventist. In the video, he talks about finding religion after a "downward trend", which involved smoking weed and dropping acid at high school, and getting numerous speeding tickets.
The man sitting next to Angus in the video has not been identified.
In pics: Child stars Where are they now?