Man goes into a shop to buy some brains. The shop assistant says "We have lots of different kinds of brains. Sports Star brains for $100 a pound. Engineer brain for $200 a pound, scientist brain for $300 a pound, and finally VIPPER brain for $10000 a pound".

The guy says "Woah, VIPPER brain is really expensive, it must be the best".

The shop keeper says "No, not really, we just have to kill 100 VIPPERS to get one pound".

lol