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Producer Li'l Jon gets Usher crunk'd with the current pop hit "Yeah!" But local monthly club night "Whoride!"promises something even stranger than the smooth R&B singer adopting the dirty party-funk of his fellow Atlantan: crunk-dified house music. Before you shudder, though, understand that this club doesn't promise a mean hybrid of disco beats and the drunk, thuggish shouting of crunk, but merely DJs with a combined love of booming bass and slightly risqué content, which ultimately adds up to fun for those with loose booties (and looser morals). "Whoride!" with DJs Tycho, Bam, Joey Rego, and special guests takes place on Saturday, April 3 (and every first Saturday of the month), from 9 p.m. to 2 a.m. at the Sublounge, 628 20th St. (at Third Street), S.F. Tickets are $5, ladies free before 11 p.m.; call 552-3603 or go to www.sublounge.com.