In case you missed it, 3AW has a new talkback number – 133 693.

But it’s tripped up almost every presenter since it changed!

The punishment for getting the number wrong is a donation to the Royal Children’s Hospital!

It led to Tom Elliott having a bit of fun with the matter and seeking advice from Professor Barbara Mullan, professor in health psychology at Curtin University who studies habit formation and maintenance, about how he could best shake the number from his brain after almost 20 years of reciting it.

“The key is to try and find a cue that you can put on top of it,” she said.

Press PLAY below to hear her advice

Picture: Getty iStock