Combine eggs and water in a bowl and beat with an electric mixer until frothy. Fold in matzo meal, vegetable oil, parsley, salt, and pepper until well mixed. Cover and refrigerate for at least 2 hours.
Bring a large pot of salted water to a rolling boil.
Moisten hands and roll mixture into golf ball-sized balls. Drop carefully into the boiling water, cover, and reduce heat to a rolling simmer. Cook for 30 minutes. Remove with a slotted spoon and drain.