Back in 2008, Mitt Romney's son Matt (who was 36 at the time) decided to mess with his dad the day before the Michigan primary. So he prank called him using an Arnold Schwarzenegger soundboard.

The video of it kind of flew under the radar, because John McCain was the favorite. But now it's a hit on YouTube.

Romney thought it was the real Arnold for almost a minute...until he heard a line from 'Kindergarten Cop' and hung up.

The line was, "Who is your daddy, and what does he do?"

Here's the video: