'Hangover Part II' Trailer: Five Key Moments

First full trailer shows return of Ken Jeong as Leslie Chow.

Kanye West's "Dark Fantasy" playing during the trailer's opening moments tells you everything you need to know about "The Hangover Part II": "Can we get much higher?"

Apparently we can. At least Phil (Bradley Cooper), Stu (Ed Helms) and Alan (Zach Galifianakis) can as they drop into Thailand — or "Thigh-land," as Alan calls it — for Stu's destination wedding.

The "Hangover Part II" teaser trailer gave us a taste of the sort of madness the sequel to 2009's blockbuster comedy would deliver. But the first full trailer, which popped up online Thursday evening, gives us a more robust — and occasionally more raunchy — idea of exactly how these three jokers once again end up effed up and racing to get back to their loved ones. Here are our picks for the five key moments from the trailer.

The Worst Rehearsal-Dinner Speech Ever

Stu should know that as soon as Alan gets up to give a speech in front of friends and family, things are not going to go well. No sooner does Alan say he can never speak of what happened in Las Vegas (during the events of the original film) than he proceeds to do just that. "This is not Stu's first marriage. There was a whore in Las Vegas a couple of ...," he declares before being cut off. Besides being highly inappropriate and pretty darn funny, the speech lets us know that the story line of the sequel takes place a few years after Vegas, perhaps in real time following 2009's "Hangover."

Teddy Is Bad News

Stu's bride-to-be comes up with one unfortunate idea when she suggests the guys go out for a drink and take her little brother Teddy along.

Cut to the next morning and, once again, one seriously vicious post-party hangover. Teddy is missing. The boys have somehow landed in Bangkok. And Stu can't return to his bride until he locates her bro. Is Teddy the one responsible for dosing them with drugs and kicking off their misadventure? Alan promises that, unlike last time, it wasn't him. Teddy seems a likely culprit. Although there's also ...

Leslie Chow?!

As Phil says when they find him in their dive of a hotel room, "Chow, what are you doing here?" That's a great question. Well, apparently he is Alan's plus one, whatever that entails. And according to Chow himself, "We had a sick night, bitches!" Though the way in which he figures into the plot remains to be seen, it's great to see 2010 MTV Movie Award winner Ken Jeong back in the mix.

Stu, Unleashed

Blink and you'll miss it, but around the two-minute mark, we get a glimpse of Stu going buck-wild on what looks to be the streets of Bangkok. Is this a peek at what happens before the hangover sets in? Or perhaps Stu lets loose a second time? It's impossible to tell when exactly this scene takes place, since the left side of his face — the one that bears a Mike Tyson-esque tattoo — is not revealed to the camera.

Call PETA!

Let's just put this out there: Director Todd Phillips digs masturbation humor. In "Hangover," he had Galifianakis take advantage of a baby. In "Due Date," he had Galifianakis do unclean things to a dog. And now, it's a monkey's turn: After hiding a water bottle under a monk's robes, he has the animal simulate, well, let Zack explain: "When a monkey nibbles on a weenus, it's funny in any language."

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