It's startlingly funny in an uncomfortable, envelope-pushing way that's all the more effective for how it sneaks up on you.
What are people saying?
What are critics saying?
An ostensible Danish "Hangover" that more closely resembles "Two and a Half Men" with nudity and unexpurgated dick jokes.
For American audiences, each gag has added appeal because it contains an uneasy humor that's often explored but never fully exploited in these parts.
Of course, it's because of the film's casually profane tone and commitment to pushing the boundaries of taste and acceptability that makes Klown a step above "The Hangover," a lack of fear towards the lawlessness with which those films only flirt.
The Hollywood Reporter by John DeFore
The premise, and the hijinks that follow, are about as outrageous as anything in today's crop of raunchy comedies. But Nørgaard offers them with a much drier wit than Hollywood typically delivers.
For all its episodic, gleeful inappropriateness, the movie Klown most resembles - not that it tries to or anything - is Alexander Payne's half-soused flight from maturity, "Sideways."
Austin Chronicle by Marjorie Baumgarten
Penis-obsessed, man-child film comedies can crown a new king: the Danish import Klown.
Raunchy dude comedy is hardly the sole province of American cinema, as Klown all too dispiritingly reconfirms.
Whenever Klown hits, it's hysterical.
Entertainment Weekly by Owen Gleiberman
Klown, a comedy from Denmark about two men on a canoe trip who descend into all sorts of desperate debauchery, demonstrates how the semi-improv, jitter-cam mode of filmmaking has gone from being a style to a tic - a way to disguise how unreal a movie can be.