What Came First? The Jock... or the Jock Strap...

That's what they're wondering...

Ha ha.
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Well, yesterday I was doing the laundry, and my husband (plays city league baseball) left his Jock Strap on the floor and I almost died tripping over it (I know, ew.) Needless to say I then stood there for fifteen minutes rubbing my toe (which I'd hit against the bedframe) and wondering what came first: The Jock, or the Jock Strap.
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Don't ask me why I thought this, but I just did.
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Did they name the Jock Strap ofter the Jock, or the Jock after the Jock S...