i'd like to take this moment to say that rubbing chapstick on the inside or any part of your goggles is equally as stupid as rubbing it on your eyes.
I'd think it does the same thing as Cat-scat, I don't know though... Cat-scat mite be a special mixture of something.
And does this friend of yours put it on his actual eye balls???
If he does maybe run him off a cliff to thin out his gene pool and Hope he realizes that he's probably ruining his eyes.