No more `naughty words` for Pete Wentz

'As a parent, I'm finally being able to get my mouth to behave itself as far as saying naughty words,' the Fall Out Boy bassist admitted. 'He says everything!'

The 31-year-old and his wife Ashlee Simpson welcomed Bronx two years ago, and the doting dad told Us magazine fatherhood is a blast.

'It's one of those things where he's so awesome, he just makes me smile,' Wentz said.

'Even when he says [bad words] back it's like, 'No way!''

The rocker said watching the tot grow is an incredible experience.

'It's so crazy to watch something that was a baby become something so animated, so smart and so personable,” he said.