Hypercars go above and beyond the average supercar. They are the most over-engineered consumer products on the planet, built to be a collection of mind boggling numbers instead of merely a tool for dropping panties (think Gallardo versus MP4-12C, or even Alfa 8C versus Nissan GT-R).
Cars such as the Pagani Huayra, Bugatti Veyron, Koenigsegg, LaFerrari F70, Porsche 918 and McLaren F1 all fit the definition for 'hypercar'.
Usually with engines that have more than 10 cylinders, built from carbon fiber, and have the engine in the back, for better aerodynamics. A hypercar shares the same characteristic of a mussel car by not requiring great handling performance, it's more about strait line speed.
Person 2: "Yeah but you'll get more pussy with that Hyper car"
Note: The Lamborghini being the Hyper car in this example.