Tell me about your balls

I see some people cover their hitches with tennis balls. The only reason I can think of doing this is if you grease the hitch ball. But why would anyone do that, it’s just messy and to prevent scratching the ball?

So confused why some people do this. Drives me nuts when anybody leaves a hitch in the receiver because here in Wisconsin it can rust into place permanently
 

bored&stroked

Urban redneck
Location
AZ
Some people don't plan on removing them, rusting into place doesn't do anything except add a layer of security its not coming off by accident. And the balls are bright green. You seen them, and therefor don't smash your shin into them.
 
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