It's probably because of the similar shape of a head to a bean. Very similar to 'nut' which is another slang term for head.Bobinwales wrote:Bean means head.
I know that, although I can't prove it! I have tried a few combinations, but nothing is coming up.
I can find a reference to 'bean' as a head from 1914, but it's difficult to filter out the beans from the heads when doing a search.
I was also wondering if 'bean' for head came from Cockney slang, but it appears not.R. H. Andrews - 1914 -
In spite of these advices, the men of the profession who "used their beans" soon saw that "base hits" were possible with small doses, "two and three baggers" with still larger doses ...
In Cockney sland you've got:
baked bean/runner bean = Queen
baked beans = jeans
bean flicker = lesbian
and spoonerism "I ain't aberdeen" = "I haven't had a bean".