Actually, it was Chico, CA which has a law on the books.. Berkeley doesn't have one on the books that I've found via google, anyway 
HOWEVER, it's hard to beat Marlboro for stupid laws:
It is illegal to buy, sell, or own a squirt gun within the city limits.
"Silly String" is illegal to purchase or own within city limits.
It is illegal for any city resident to own more than two dogs.
At one point or another, these must have seemed good ideas to some idiot.. and are of course not enforced anymore, if they ever were. The fact remains these laws remain. The last one.. no more than two dogs.. umm.. Puppies are illegal?
It is however legal to duel to the death on Boston Common as long as the Governor is in attendance and officiating. Massachusetts is a little weird sometimes.
Cali has nothing on The PRC (People's Republic of Cambridge)..