Windturbine addictions?

I have a very, very good female friend who has a weird fascination for windturbines... Sometimes during sex she screams " OH Mr Windturbine!" And one time when we were doing roll-playing she demanded me to act as a windturbine constructor! Is that really normal?

Last week she got me this present, a hat, u know one of these novelty ones. This one had a windturbine on it, with the blades and all which moved if u spunn them! She demanded I´d wear it when we had sex but I refuse and we haven´t had sex since...

What should I do?