Mitt Romney's son Tagg said Wednesday that he wanted to punch President Barack Obama during the second presidential debate.

"I’m going to ask something I think a lot of people want to know, or at least I do. What is it like for you to hear the President of the United States call your dad a liar. How do you react to that?" Tagg was asked by radio host Bill Lumaye.

"Well -- jump out of your seat and you want to rush down to the debate stage and take a swing at him," he replied. "But you know you can’t do that because, well, first there is a lot of Secret Service between you and him but also because this is the nature of the process, they're going to do everything they can do to make my dad into someone he is not."

Tagg said his father was "fantastic" during the presidential debate on Tuesday night.

"He's terrified before he gets out there," Tagg added. "Terrified is too strong of a word, but he's like anybody. He gets butterflies a little bit."

Tuesday's debate was far more heated than the first presidential debate held earlier this month. On several occasions, Obama asserted that what his Republican challenger had said was "simply not true," and the two candidates frequently interrupted each other.

Listen to audio, via Think Progress, below:

[Image via Gage Skidmore, Creative Commons licensed]