Twenty-five-year-old Trey Songz made ladies squeal last spring with a sultry MTV Unplugged cover of Kings of Leon's "Use Somebody." The R&B smoothie's fourth record has no such surprises, notwithstanding a brassy, helium-voiced cameo from Nicki Minaj on the catchy, booze-celebrating "Bottoms Up." Otherwise it's just steady mackin' over dull, airbrushed slow-jams, as Songz rhymes "just like a kid who found some candy" with "let me feel and find your panties." Yes, he invented sex, as an earlier single noted. But when he declares, "The only thing inside my mind is 'mm-hmm,' " it's hard not to say, "Really?"