I learned it by watching you

I learned it by watching you! was a large-scale US anti-narcotics campaign by Partnership for a Drug-Free America (PDFA) launched in 1987, that used a televised public service announcement.

The PSA features a father confronting his son in his bedroom after finding a box containing an unspecified controlled substance. After his father angrily asks him how he learned to use drugs, the son shouts "I learned it by watching you!" The narrator then voices-over "Parents who use drugs have children who use drugs."