"I'm just trying not to laugh, and stay focused," Chris said. "I find myself watching and I go, 'S**t! I've got to respond.'"
The Thor star was born in 1983, the same year that the first National Lampoon's Vacation movie was released, so the franchise had a big impact on his childhood.
"I love the original films," Chris said. "I grew up on them like most people of my generation, and this is an opportunity to do something different."
The reboot stars Ed Helms as Rusty Griswold, son of Clark Griswold (played by original cast member Chevy Chase). Rusty decides to take his family out to relive the vacation magic he shared with his folks more than 30 years earlier. Chris plays Rusty's brother-in-law in the movie and he described his character as a "cheesy" weatherman who is "kind of a douchebag."
In addition to Chevy, original cast member Beverly D'Angelo also appears in the reboot, and Chris wasn't the only actor on set thrilled to be working with the stars of the original films.