(Australian/English
slang) Uncircumcised penis, i.e. intact with the foreskin concealing the glans, which to some, strangely resembles the
soft, crumpled woolen headwear!
Antonym:
Helmet
When I was at high school, we'd
play handball and often separate into different teams using physical aspects, such as
light hair
vs. dark, talls vs. shorts and of course, beanies vs. helmets!