Its ratio of potty humor to enjoyable gag is normal, but a funny setup heightens the good moments. In protest, they freeze the gates and take off for New York to raise some Hell. There's something amusing about Patricia Arquette's fashion student falling in love with the devil's son. Keitel's enjoyable as the Prince of Darkness, and Reese Witherspoon as Nicky's angelic mom works well. Little Nicky is a Sandler movie.
Adolescent humor abounds.
Somebody sprouts breasts out of his head. Then come jokes about wheelchair-bound quadriplegics. Sandler and fellow scriptwriters follow the maxim that evil always wins by soiling some good laughs with very bad ones.