van de leg

Literally, “off [one's] laying”, originally in reference to chickens not laying eggs.

van de leg

1. (literally, of chickens or other birds) Not laying eggs due to stress, disease or some other factor.

   Door een ontsteking raakte de kip van de leg. ― The chicken had stopped laying eggs due to an inflammation.

2. (figuratively, idiomatic, of people) Distraught, confused or upset.

   Sinds de dood van haar hond is ze helemaal van de leg. ― She has been very distraught since the death of her dog.