If you know the answer to the question "Who lives in a pineapple under the sea?", this is your movie: a feature-length version of the double entendre-filled cartoon series that's as popular with adults as tiny tots. It isn't as consistently funny as some of the 11-minute TV episodes, but fans should be sufficiently absorbed that they'll be able to ignore the fact that it's a little waterlogged. The rowdy and rambunctious opener, filled with live-action pirates who take their SpongeBob very seriously, kicks off the animated story, which takes place in undersea Bikini Bottom. Fry-cook SpongeBob (voice of Tom Kenny) dreams of managing the newest location of the Krusty K...