Two of her son's friends are not only abusing drugs - they had even invited her 18-year-old teen to join them in smoking cannabis, said Dr Intan Azura Mokhtar (Ang Mo Kio GRC).
He "sensibly declined" the offer, she said in Parliament yesterday.
Dr Intan revealed how one of her son's polytechnic mates had been smoking cannabis in school and how another friend of his - an Institute of Technical Education (ITE) student - was caught smoking the drug.
"While he (the ITE student) is undergoing follow-up checks through routine urine tests, he continues to take synthetic weed, which he claims cannot be detected through the urine tests," she said.
Dr Intan has called for the Central Narcotics Bureau, the police, the Health Promotion Board and institutes of higher learning to go all out to stop drug abuse in educational institutions, even if the numbers are small and seemingly insignificant.