Let’s get the obvious out of the way immediately. Is the 2015 reboot of Vacation a masterpiece of modern cinema? Absolutely not. Is it a technically "good" movie? No. Could I predict exactly what was going to go wrong with 100% accuracy before it happened? Yes. Did I groan at having to see Chevy Chase’s big bald head shoehorned into a forced cameo? You bet.But despite all of that... this movie is genuinely, laugh-out-loud funny.The film follows a grown-up Rusty Griswold (Ed Helms) as he forces his wife (Christina Applegate) and two sons on a cross-country road trip to Walley World. The humor perfectly captures the chaotic, mean-spirited style of the original 80s comedies that blew up so long ago. It is packed to the brim with slapstick injuries, aggressively gross-out gags, and moments so painfully cringe-inducing you will want to rip your own eyeballs out. What truly holds this chaotic road trip together is the stellar cast. Ed Helms—who is essentially a walking, talking set of perfect teeth—is fantastic at playing the blissfully ignorant, insecure dad. Christina Applegate completely steals the show as his wife, proving once again how effortlessly funny she is. The dynamic between the two brothers is also an unexpected highlight, flipping the usual script by having the foul-mouthed younger brother endlessly torment his awkward older sibling. I won't give away any of the wild surprises or disastrous pit stops, because the humor actually works best if you go in totally blind. In fact, you might even enjoy this more if you've never seen the original films. It’s dumb, it’s gross, and it’s a remarkably fun time.