Justin Bieber posted a photo on Instagram today of himself and a friend ... drinking a couple of beers ... and captioned it "Beers in the jungle."
Bieber is only 19, so he'll probably learn this with age ... but bragging about drinking an Amstel?? Heineken, maybe ... but not an Amstel.
Still, at least he's not drinking a ... [insert your answer in the comments section].
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