Urban Dictionary: on the grind
Isaiah 3:15 Why do you crush My people and grind the faces of the declares the Lord GOD of Hosts.
'Click!' 'Clunk!' 'Grind!' What does it mean when joints talk?
Grinding on someone
What feels good to you will vary based on your individual preferences.
This could be because your rotor discs have gotten worn out from multiple years of use.
Definitions include: a sandwich, also called "hoagie" or "sub.