The Entourage star was motoring through Los Angeles on Thursday (07Apr11) as he was speaking to actress/DJ Sophie Monk on Sydney's 2DayFM.
During the call, Piven's car was pulled over by cops who handed him a ticket for talking on his cell phone and the whole incident was heard by listeners Down Under.
Piven told Monk, "You're not going to believe this, there's a cop pulling me over and I'm getting a very large ticket for talking on my cell phone, I'm going to let you guys listen to this..."
He was then heard talking to a police officer, saying, "You know what, I apologise, it's a work-related call and it's not even a good excuse, but I had to pick it up because it's a radio station who's calling..."
But the officer was unimpressed and asked to see his licence. Monk's co-host Jackie O then talked to the cop over the phone and asked "Is there any way you can let him off?"
The police officer laughed and said, "No".