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The Wolf Pack is returning to Las Vegas and it doesn't look like these guys have learned much from their past trips.

In the new trailer for The Hangover Part III released today, the group is still making plenty of bad decisions and creating all-around mayhem.

Alan (Zach Galifianakis) appears to be the craziest member of the Wolf Pack as he explores the neighborhoods around Sin City.

At a local convenient store, Alan meets Melissa McCarthy where it's love at first sight. Did they really share a lollipop together?

Soon after, Alan decides to buy a giraffe and transport the creature on a crowded highway. Let's just say it doesn't end well for anyone involved.

Phil (Bradley Cooper), Stu (Ed Helms) Mr. Chow (Ken Jeong) and Jade (Heather Graham) also take part in the craziness for the film's final installment.

"I told myself I would never come back," Stu says. Sorry man, it's too late to turn back now.

The Hangover Part III hits theatres nationwide May 24.