The only thing that the Inland Revenue has not taxed yet is the male penis.
This is due to the fact that 69% of the time it is hanging around unemployed, 10% of the time it is hard up, 20% of the time it is pissed off,1% of the time it is in a hole. On top of that, it has two dependents and they are both nuts!
HOWEVER, effective June 1st, 2009, the penis will now be taxed according to size: The brackets are as follows: