Captains Cupboard is a term also known as a Head Stash.

“Head Stash” or “Captains Cupboard” is used for the special or especially good strains of weed only smoked by the grower or seller.
“Can we smoke some of that? It looks dank.”

“That’s Captains Cupboard shit, not a chance
by SheldonJohnLavway November 19, 2019
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