Is it normal that i don't like to show my feet around other guys?

I'm a guy, and I've always been this way, ever since I was a kid. I don't feel comfortable showing my bare feet around other guys for some reason and I don't know why, I just know that I've always had this...whatever it is and it may not ever change. the funny thing is, I'm perfectly comfy showing my feet around women. anyone else out there like this?