The Burr in the Burgh

I'm sure that you, like I, have used light sabers in a variety of ways. Slicing bagels. Heating coffee. Lighting your cigar. Even trimming hedges. Haven't you ever wondered exactly how these useful tools work? The answer can be found here. Hat tip to The Terrible Swede.

A flea and a fly in a flue
Were imprisoned, so what could they do?
Said the fly, "Let us flee!"
"Let us fly!" said the flea!
So they flew through a flaw in the flue.
-Ogden Nash