Young kids buying large amount of rubbing alcohol/wtf are they up to?

[Klompy]

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In Bolivia the really really poor people will drink rubbing alcohol because its really cheap and really potent. Also, a somewhat common drink on big celebrations is mixing rubbing alcohol and milk straight from a cow in a shot glass and topping it with sugar. Shots of those will get you fizzzuked up.

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Can anyone confirm or deny this being true? I was always under the impression that isopropyl alcohol will make you go blind, but I can't seem to find any proof of this with google.