sharp knife 

1. A twenty dollar bill;
2. Andrew Jackson, 7th president of the United States (who appears on the twenty), nicknamed "sharp knife" by the Cherokee people for his genocidal policies against American Indians.

1. Dude, can you break my Franklin? (i.e., $100 bill)
2. Nah, bro. I only got a sharp knife.

sharp knife by poleshift September 26, 2008

sharp like a knife ching!

adj.

seriously: follows saying something smart

facetiously: figuring something out too late that was really obvious

seriously:
A: how will we get there!
B: build a rocket! i'm sharp like a knife... ching!

facetiously:
A: i invented the internet!
B: what are you, al gore?
A: what? ohhh! hahaah, i'm sharp like a knife, ching!

sharp like a knife ching! by jil May 29, 2004

Sharp as the Milk Street bread knife 

Cutting labor that will be re-hired elsewhere for a completely different skill.

The labor market is as sharp as the milk street bread knife

Sharp as the Milk Street bread knife by Ao10110 September 27, 2021