Because he doesn't like being followed.
Logic. (If you don't like physics jokes, just keep movin') ...(if you don't like math jokes, trust me, sometimes it makes a difference).
Because German soldiers like to march in the shadow.
An anonimouse
With Twitter you only get 140 characters.
Pac Man-free Ver.
The last time I dumped a load into the washing machine, she didn't follow me around for a week!
IN HIS SLEEVIES! Best used with little kids, or followed by maniacal laughter.