Be in short supply phrase
Used to say that there is not very much of something available or it is pretty scarce and difficult to find
This product has just been launched for a month but it is in short supply now. Consumers are craving for it.
These shoes are limited version. That's why they are in short supply now.
Sunlight is in short supply in the winter months for people.
Being rare and not often seen
A humorous way of saying that what one has said is just what they acknowledge and may not be entirely accurate
Mike: Have you returned from your vacation on the beach? Your skin seems to get tanned.
Jenny: My skin is always dark. That's my story and I'm sticking to it!