When I was a kid, I had a fear of buttons :D
Later I found out it actually exists.

Koumpounophobia is a relatively rare phobia, but one that does exist. It is, simply explained, an irrational and persistent fear of buttons (standalone ones or those on clothing). People suffering from Koumpounophobia tend to avoid clothes with buttons.

http://www.fearof.net/fear-of-buttons-phobia-koumpounophobia/