The Monarchy in the UK is considered above the law, and as such can grant immunity to another, albeit in an indirect manner.
Many old laws are still in existence, although most are obsolete as they are overruled by statute law.
It is against the law to die inside the houses of parliament.
In the UK, a pregnant woman can legally relieve herself anywhere she wants.
The queen actually decides who becomes Prime minister.
In the city of York, it is legal to murder a Scotsman within the ancient city walls, but only if he is carrying a bow and arrow.
Edit. Falknor the words i mentioned before do exist but may not be in the dictionary as they more regional terms, although Sporange is used in microbiology or something cant quite remember what it was.