Judge Reinhold's Strange Cocaine Talk with DJ Before Dallas Arrest

Judge Reinhold made a super awkward joke with a Miami disc jockey about cocaine, 16-year-old boys and one of the Judge's classic movies ... just hours before his arrest.

Reinhold phoned into the “Paul and Young Ron" show Thursday morning and reprimanded a DJ for letting his kid watch "Fast Times at Ridgemont High."

In Reinhold's defense ... the flick is rated R for some of the best nudity, drug and solo sex scenes ("Doesn't anyone f***ing knock anymore?") in Hollywood history.

Judge might have a good point. Just a curious reference considering what went down shortly after this.