Lol at the animated gif 2-0-Sixx posted. How you gonna let a naked dude jump from a trunk onto your shoulders HAhAha. The movie was good and funny imo. Actually, I liked this, Pineapple Express, Superbad, and Tropic Thunder. Sometimes a movie can make up for a lack of comedy with a good storyline. For examply, Forgetting Sarah Marshall was a success because even if you didn't find it funny you could have found other aspects of the film enjoyable. But I think they were all funny.
Btw, Ben Stiller is one of my favorite comedian-actors. I always find his work enjoyable.