Sharon Osbourne may come across as a laid-back liberal mother, but there is at lease one issue on which she remains staunchly conservative.

The former X Factor judge – whose husband Ozzy Osbourne and children Kelly and Jack have all battled drug addiction – has spoken out against plans to legalise marijuana, warning “it is going to end in tears”.

Sharon, 62, told American CBS TV: “I have big resentments that this is happening. Anything that alters your mental state I don’t think should be allowed.

Ozzy Osbourne with daughter Kelly, son Jack and wife Sharon
Ozzy Osbourne, Kelly and Jack have all battled drug problems (Chris Pizzello/AP)

“You can say prescribed medication can alter your mental state but I don’t agree with it all.

She added: “The next thing I am waiting for is when someone is working heavy machinery, when they are driving a car. It is all going to end in tears.”

Sharon also predicted that laws that have already been passed to legalise the drug in certain US states will be overturned.

Sharon Osbourne
Sharon predicts drug laws will be reversed (Ian West/PA)

She said: “In years to come there will be new laws for those who are smoking and using marijuana.

“This will end not the way everybody thinks it will.”