Getting Old?

I just finished performing my morning ablutions.

Shower, makeup, hair.

I was standing at the vanity in my bra and drawers putting blush on my cheeks.  

I don't say that to be titillating.

I tend to be vigorous in my rouge application.  Every time I would swipe the brush across my cheeks I heard a weird sound coming from beneath my right arm.

It was my arm flab.

...flapping.

...audibly.

I told you it wasn't titillating.