[Sooth2222]

Why did he cut his hair?

Hair provides a chemical record of any illicit substance that one might have ingested while the hair was growing. Just a guess.

[mikeybaby]

Superb thinking. Absolutely superb.
Also, it would be interesting if a student recorded a teacher ranting about how the Bible condems homosexuality in class.
Just a thought.

[Das Outsider]

Hair provides a chemical record of any illicit substance that one might have ingested while the hair was growing. Just a guess.

In that case, samples from the body or eyebrows is taken. But then again, this is a geography professor who is unable to distinguish the serious differences between George W. Bush and Adolf Hitler; America and Germany during the Third Reich. Go figure.