Don't laugh, but that actually is close to what goes on. Our Friday morning breakfast is a strange get together, and new knives get shown off, and cutting edges are put to the test. It takes a very sharp, but grabby edge to pass the hanging sausage test. No really, this is kind of legit.
We take a nice big fat country sausage, and spear it on a fork. Then holding the sausage out on the fork horizontally, you're allowed one single pass on the sausage. To get a go, your knife needs to totally sever the sausage in that one pass.
Your not allowed to hold the sausage in any way aside from just on the fork. The sausage has a skin like most country sausage, and can be a little tricky to cut while hanging unsupported off a fork. The rules for the sausage cutting is that you're allowed to touch up the knife on the bottom of the coffee mug. This puts a nice toothy edge on the knife, that if you have at least two inches of blade, will sever a sausage in one pass.
Of course, Penny and the owner thinks we're all nuts, but he likes our business. Some of the other patrons like the county road crew, power company crew, and other workers getting an early breakfast think it's some kind of local entertainment by a bunch of semi lucid old farts.
But it really is a good test of how well your knife slices. Try the hanging sausage test. A mirror polished blade won't do it. Too slippery.
Carl.