People are easily satisfied these days it appears.
This movie epitomized quite how lazy 'comedy writers' have become. Endless vulgarity is not funny. It's not like I'm some kind of prude that can't stand bad language, but swearing and overt sexual references/behaviour is grossly over-used in comedies in an attempt to make up for the fact there is no real wit attached to the writing.
Take the dance scene. Basically, the writers have said 'oh look, we've got this hilarious concept of four rather awkward guys on holiday - let's make them do a stupid dance in front of some girls.' Well done, top marks for originality there. Maybe I ask too much from a film, but this was just a hopeless attempt in every way.
I don't think you necessarily have to take out the bad language aspect of comedies or anything like that - The Thick Of It works brilliantly with a swear word every line, but it's wonderfully ironic and there's a huge depth to the plot which makes it genuinely entertaining. The Inbetweeners is patronising to young people who actually have a brain, but then half the Caf turns up and says it's brilliant. It's beyond bizarre.
