The brand new wrinkle

So... I was creaming my face after a shower and suddenly I saw it... high up on my forehead - a demarkation... a distinct line. I stopped stunned... Was it a wrinkle??? I wasn't old enough to have one. In panic, I rubbed cream vigorously on it, trying to smooth it away... It didn't go.. I was devastated... Having prided myself on the jet-black mane of hair, was I going to lose it all to a stupid wrinkle on my forehead? And then I looked closer... at the line... it was crinkly... and went all the way from one side of my hair to the other..; Wait a minute... Wrinkles didn't do that... and certainly not the first one... And then it dawned on me. It was the line from the elastic of the shower cap. Phew!