They can go insanely fast while doing the knife game. The other pastas who have a blade, cant even go one second without a knife stuck in their hand.
Jeff has only stabbed himself once
Jane has stabbed herself around 2 times
Nina stabbed herself 5 times
Eyeless Jack has stabbed himself 2 times
And Liu is the master, he never stabbed himself going fast, even if his fingers are pretty close. Everyone usually says that Jeff should retire from his place as the one never to mess with, all only because liu has great aim and got ej in his eye socket....