'Hangover 2' Crazy Secret Pics From the Set

Here's the deal -- TMZ has obtained some pretty badass photos from the set of "Hangover 2." They were shot last night in Thailand ... and they're hilarious ... but they could spoil a thing or two about the flick.

So consider this your SPOILER WARNING -- and click to reveal at your own discretion.

But you should totally click ... 'cause the pics are pretty awesome.

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