Jack Osbourne says his dad Ozzy is awful to travel with.

Jack Osbourne

Jack Osbourne

The 30-year-old media personality is currently starring in 'Ozzy and Jack's World Detour' with his rocker dad Ozzy Osbourne, but the star says the Black Sabbath frontman is a nightmare to be in a car with because he doesn't follow the "road trip rules".

Speaking to the Daily Star newspaper, Jack said: "There are road trip rules; if you fart in the car, roll the window down - he doesn't do that."

And the pair found themselves in more trouble when Ozzy, 67, failed to direct his son for their own show even though he was the designated navigator. He claims, however, that his dyslexia prevented him from being able to navigate successfully.

The former hell raiser said: "I am dyslexic so I cannot read a map."

And the news of the 'Crazy Train' musician causing issues on his trip with his son comes after his wife Sharon Osbourne recently opened up about struggling to cope amidst the news of the rocker's sex addiction.

She said: "He's been an outpatient for sex addiction for the last three months, and after the tour he'll be an inpatient for three months. And he's working at it. It's hard because it affects the whole family, and it's quite embarrassing to talk about."

Meanwhile the pair's daughter Kelly has settled a lawsuit she was involved in with Ozzy's mistress and hairdresser Michelle Pugh. Michelle had accused her ex-lover's offspring of having "stimulated controversy for the purpose of making money" after she took to Twitter to leak her phone number online when news of her affair with the Black Sabbath rocker was made public.

Michelle's lawyer F. Edie Mermelstein said last week: "The tweets have been removed and the lawsuit has been privately resolved. The resolution statement is mutual."