Definitions
nhopi: mash prepared from cattle melon or pumpkin
Translation
The disabled, laughing at each other while eating mash.
Application
People often notice and criticise faults in others while overlooking their own. It is used when someone criticises or mocks another person for a fault they themselves also have, often to an equal or even greater degree. It reminds us to reflect on our own shortcomings before pointing out those of others.