If you're on this site, you probably like bikes. If you're a human, you probably like pizza. Combine these two passions of yours and behold the greatest invention known to man. The Park Tool Bicycle Pizza Cutter. It is shaped like a bike and cuts pizza. Great for gifts or yourself. Enough said.
From Park Tool
An update of one of our all-time greats, the PZT-2 Pizza Tool is bigger (for better hand position), better (super sharp, large diameter stainless steel cutting wheel cuts through even the toughest terrain), and stronger