Naughty? Nice!

Naughty by Nature produced two songs in the ’90s that set dance floors a-gyratin&Rsquo;: “O.P.P.” and “Hip Hop Hooray.” Having a flashback to the era of boom boxes and neon shades? So might Memorial Auditorium on June 27. Aptly titled the Flashback Friday Fest, the concert features Naughty by Nature, Slick Rick (“Children&Rsquo;s Story” you know, “Once upon a time not long ago … ”), Christopher Williams ("I'm Dreamin'," "Every Little Thing U Do"), H-Town of “Knockin&Rsquo; da Boots” fame and Troop (“Mamacita”).