Instruct: Classify a review into positive or negative sentiment.
Query: shockingly bad

The worst movie ever? This movie is marketed as being a "Barney" bashing movie, for all those parents fed up with having to endure endless hours of mindless childrens videos. But instead of a movie with biting sarcasm and rampant deviltry, this is really a musical written for children. A poorly written one. Watching this movie was like watching 2 hours of Barney videos. Instead of treating children's icons like pinatas, this movie is an homage to them. The script was written for children. It completely lacks adult humor, and any humor at any level period. In all honesty, there is one lone exception: a scene by Robin Williams, where he slams into a brick wall in a spoof of a scene from Singing in the Rain. I was stunned that there were no other laughs in a movie with such a great comedian. But then this isn't really a movie at at, just a musical on film. If you haven't had enough of Barney-type songs then this movie is for you.