I am 8 months' pregnant, and my naval has gone outwards to reveal a small, dark skin tag in the centre of my naval. It's maybe 2mm long x 1mm wide, and only visible when heavily pregnant.
I hate it so much. It reminds me of a small penis. I'm thinking of going to the doctor and having it taken off, but I don't really want a needle put in around that area when pregnant, and when I'm not pregnant it won't be visible anymore.
10 years ago, I had a tiny flat wart on the sole of my foot that caused me no pain and was not visible but I got that thing frozen off immediately as it freaked me out.
Surely other people may have some small body thing which causes them irrational feelings.