Old fartdom beckoning?

well, my hair hasn't fallen out overnight, nor my teeth. The Beige Gene - the one that makes you start thinking, 'actually, beige is nice' - hasn't kicked in. I haven't developed a predilection for jackets with leather patches or slippers in a plaid pattern, nor have I developed a yearning for a sports car, golf, or polo-necked sweaters in a diamond pattern. In fact, it's all pretty normal so far.
Happy 40th birthday, me.