Say what you will about Lindsay Lohan, but the girl's got range.  On the ground level at LAX LiLo is friendly as can be with photogs, even laughing off a question about being late during the second day on the "Anger Management" set.

But just seconds later, on the departure level, Lindsay was pissed off and

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"Pawn Stars" pays BANK ... just ask Chumlee ... who dropped thousands of dollars on an expensive new pair of boobs for his girlfriend, TMZ has learned.

Sources close to Chum tell us, the perky new breasts were a recent birthday gift for his gf Tanya -- but that wasn't all he got her.

W

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Sammy Adams -- the rapper behind the hit songs "Driving Me Crazy" and "I Hate College" -- collapsed on stage last weekend during a concert in New Jersey ... and TMZ has obtained scary footage of the medical emergency.

Adams was performing at Six Flags Great Adventure last Saturday for a

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Jon Hamm's willie is a little too free, according to the companies lining up to help him hide his salami. But fear not Jon ... some people are still ready to defend your right to flaunt your goods.

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