[Tom]

What ones do you know of?

A couple I've thought of:

Its legal for a pregnant woman to wee into a police officers hat

If someone looks through you're window whilst you've got nothing on then its public indecency

No cows may be driven down the road between 10am and 7pm unless there is prior approval from the Commissioner of Police.

It is illegal for you to hang your bed out of the window (seriously wtf?)

In Liverpool, it is illegal for a woman to be topless in public except as a clerk in a tropical fish store.