blondeness

The extent to which someone or something is blonde.

I got dozens of winks, she got hundreds. One must never ever underestimate the power of blondeness and bustiness in the sexual imaginings of men. It’s not easy for a petite brunette to keep up.

Stupidity, dopiness.

After a slightly panicked moment when I realised I had no key to get into my house, the blondeness passed and I remembered I hadn't actually locked it[.]