A fork of Rural Dictionary
To learn, gain knowledge, give the brain something to "feed" on.
This phrase is most popular in the Jefferson Starship song "White Rabbit"
It also may mean doing a lot a drug.
"Remember what the doormouse said.. "FEED YOUR HEAD."
to do alot of any drug or to listen to the white rabbit and follow his ways
the white rabbit told me to feed my head, feed my head, feed my head!