Tell Me Something I Don't Know!

[Bryan+]

Early hunt saboteurs and those who generally wanted to mess with toff's heads would smoked kippers, reddish brown in colour, to lead hounds astray on their fox hunts. Hence the term - red herring.

Incredible subversion.

 

[Bedfordblue]

You can't hum while holding your nose. To hum for an extended period of time, you have to exhale, which you can't do when both your mouth and your nose are closed.