Marcus Ingram/Getty Ginuwine might create baby-making music, but that's not what ... fame with his sexually charged single "Pony," which features the lyrics: "If you're horny, let's do it ...

Tuesday night at South by Southwest, the co-CEO of Sandy Hook Promise and father of a Sandy Hook victim joined Ginuwine onstage for the set-closing “Pony ... rap song that Ginuwine sang ...