As Hard As An Abo's feet
This term originates from abo's feet being able to walk on harder and more extreme land scapes, but is usually used in a comedic way.
Person 1: "His iPod was so loud!"
Person 2: "Must of had ears As Hard As An Abo's Feet"
Person 1: "lolz"
Person 2: "Must of had ears As Hard As An Abo's Feet"
Person 1: "lolz"