One particular girl who is very beautiful and cute. She is very inteligent. Her smile lights up any room dimmed by the dull weathers of england. If you saw her for the very first time you would Never be able to look away. When you look into her eyes your heart smiles with joy. If you were ever lucky enough to know a Beanie you would be crazy and mentally ill not to find her the most beautiful girl you have ever seen.
Oh and obviously it's a nickname. Sometimes...
(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!