The only thing you can say for sure about "Informer," the unsinkable Number One reggae novelty by white Toronto toaster Snow, is that it somehow involves a stool pigeon. For all we know, Snow might be imagining he's John Gotti getting back at Sammy "the Bull" Gravano. Packed between preposterous "icky boom boom" chants and cryptic lines about tornadoes, there's stuff about being spied on and...