Because he marches to the Imperial March and not the Metric March
The Leafs are out!
If she's only wearing one sock. (This joke brought to you courtesy the homeless guy outside my local 7-11.) Edit: tweaked the punchline.
A. They love OIL
In a bucket.
Co-pper
Elle Vader.
The Imperial March.
A receding hare line.
Because the German army likes to march in the shade.
The Imperial March