Danny DeVito has brushed off reports he was boozing during a bizarre TV interview on Wednesday - insisting he was only "acting."

The Twins star shocked morning viewers in Philadephia, Pennsylvania by belching his way through a lewd live interview on the set of his sitcom It's Always Sunny in Philadelphia.

In an awkward moment, DeVito hit on the local TV female reporter, noting, "You wore that short skirt, which is really nice... Easy access."

His inappropriate behaviour and remarks prompted the host to ask the actor if he was intoxicated on the early morning beer he was drinking on set. But the actor insists he was clean and sober when the cameras were rolling.

He tells Radaronline.com, "I was only trying to make a TV interview fun. In the scene the TV people were covering, my character was drinking (pretend beer). When you see the scene on the show... you will understand. It's called acting."

Danny DeVito Pictures

(This news article provided by World Entertainment News Network)