Lol ain't nobody drinking water or wine in December. We are drinking serious alcohol. Throats are open means it's time to get drunk in South African language. Actually from black Friday to the 2nd of January. Throats are open. Juice and cold drink is to mix.
Basically when throats are open, it's when people drink alcohol, South Africa is in the top 5 countries that have a high alcohol consumption,the term came from people that drink alcohol...