The phrase “to have bees in one’s bonnet” means to be slightly daft or crazed.
The original saying, which dates at least to the sixteenth century was, “to have a head full of bees,” or “to have bees in the head, or in the brain.”
That association of craziness with bees humming in the head undoubtedly antedates that period, for the expression is recorded by John Heywood, in 1546, in his Dialogue conteining the nomber in effect of all the prouerbes in the Englishe tongue, though no earlier quotation has been found.
According to Apperson, the poet, Robert Herrick was the person who introduced the bonnet into the expression.
This was found in Herrick’s “Mad Maid’s Song,” written in 1648: “Ah! woe is nice, woe, woe is mee, Alack and well-a-day! For pitty, sir, find out that bee, Which bore my love away. I’le seek him in your bonnet brave, I’le seek him in your eyes.”
