A man was driving along the road when all of a sudden he has to sharply
swerve to avoid a box falling off a truck in front of him.
Seconds later a policeman pulled him over for reckless driving. As
the policeman starting writing the ticket he noticed the box was full of
nails and tacks.
"I had to serve or I'd have run over those and blown my tires!"
protested the driver.
"Ok", replied the officer, ripping up the ticket, "but I'm still
bringing you in."
"What for?!" retorted the man.
"Tacks evasion", answered the policeman.