Comedian Fiona O'Loughlin has called Bindi Irwin a creep who needs a slap in the face.

The recovering alcoholic was branded spiteful and hateful after her performance on Wednesday's episode of ABC music quiz Spicks and Specks.

O'Loughlin described 11-year-old Bindi as a "bit creepy" before doing an over-the-top impersonation of the child star's voice.

Then, she made a gesture indicating Bindi was crazy, and went on to mime a slap across the child star's face.

The bitter outburst stunned fellow panellists, particularly Chris Durling, a former member of Bindi's Crocmen.

Durling said working with Bindi was a great experience, describing her as "gorgeous" and down-to-earth.

Viewers said O'Loughlin was "tasteless", "un-Australian" and a bully.

In an interview with the Herald Sun, Durling said that he was upset by the attack on Bindi.

"I wasn't going to get into a Bindi debate on the show. She's like my little sister but I have gotten used to people having strong opinions about her," News.com.au quoted him as saying. (ANI)