I know it's unlikely. Americans tell jokes every day in their ordinary lives, much more often than they make comedy films, and they've almost certainly never been funny. But I think of it like this: Being funny is just a certain combination of words said in the right way at the right moment. A machine that generated random strings of words would eventually happen to churn out a mildly funny phrase or sentence purely by accident.
The unfunniness of this film didn't inspire this particular question. Rather, it was its relation to Horrible Bosses that inspired it. You see, I've heard Americans claim that HB was funny. Now, obviously it wasn't. It was boring obvious comedy with an extra dose of unfunny slapstick and face-pulling that only Americans like. The key point to be drawn from Americans liking that film, though, is this: If their instinct for what's funny is so off the mark that they in their generality consider shit like Horrible Bosses and Bridesmaids to be amusing and witty, is it even logically conceivable that such a deranged and stunted mind could ever produce a funny idea even by pure luck?
This question I pose to you.