It is definitely "blank" humor and "tasteless" but there were a few parts that were funny, they took the jackass skit/hiddencamera/prank aspect and put it together with a single story. An oldmans wife passes, his daughter brings his grandson to the funeral and drops him off because she is going to jail, he has to take him cross country to his father....
The funny part is the people that do not know they are in the movie.. Watching people react to an oldman with his penis stuck in a vending machine is funny, the entire penis in the vending machine is kind of immaterial, the "real" reaction the hidden cameras capture and collect is entertaining...