India, Aug. 10 -- Carl Radke reveals he has been going by his middle name his entire life. The Summer House star, 40, sat down with PopViewers on August 8 and let slip that "Carl" is not the name printed on his driver's license.

"My middle name is Carl," he said. "My family - we always, for whatever reason, we always went by your middle name. My brother even went by his middle name. But my ID and my passport - my first name is William. So my middle name is Carl, but I have always, since day one, been called Carl," he explained.

Radke laughed that it is "a family thing" with no clear explanation. "My mom has a different explanation for it, which I don't understand. But yeah, my full name is William Carl Radke," he added.

Radke has been ...