We've seen the anti-drink-driving adverts. Now I'm wondering what the anti-masturbation-driving adverts will look like?

Resignation 'threatens drug ban'

Mephedrone is legal and widely available

Another senior government drugs adviser has quit, hours before ministers were expected to ban a new "legal high".

The resignation of Dr Polly Taylor from the Advisory Council on the Misuse of Drugs has sparked speculation that the ban on mephedrone could be delayed.

Lib Dem science spokesman Dr Evan Harris said Home Secretary Alan Johnson's ban would have to wait until the council was "properly constituted".

Mephedrone: classifying 'legal highs'

Until we know the real harm of legal recreational drugs such as mephedrone, they should be put into a holding 'class D'

Monday 1 March 2010 14.34 GMT

The drug Mephedrone, also known as 4-MMC, which is legal in the UK. Photograph: Rex Features

Last month at a Lancaster nightclub, seven people were arrested for possession of a drug, even though the policeman leading the arrest team made it clear that the drug was not illegal. This was not the first time the police had exhibited such behaviour in relation to this drug, so what is leading to this apparently irrational police behaviour? The drug in question is mephedrone [not to be confused with the opioid substitute treatment methadone], a synthetic stimulant drug that is relatively new on the UK drug scene although it has been popular in Israel for a number of years.