Helmet Head

Today I saw a woman walking around a drug store wearing a bicycle helmet.  I really should have asked her what brand of helmet it was.  Why?  Well there's a couple of explanations for her wearing the helmet:

• She is a really hard-core cyclist, so much so that she wants to display her cycling culture to everyone.  In that case, she must know a lot about cycling equipment, and would know the best helmet to buy.
• She's forgotten she's wearing the helmet, in which case it is easily the most comfortable helmet on the market.