Attention, all Hollywood producers. Shaquille O’Neal and Rob Gronkowski have an idea for the next blockbuster event of the year. “Any producer that wants to redo ‘Step Brothers’ or ‘Twins,’” O’Neal said. “We’ll do any scene,” Gronkowski cut in. “You just come up with it, we’ll do it, we’ll give it our best shot. That’s what we do.” The towering twosome will bring that same energy next Saturday when they host “Shaq’s Fun House vs. Gronk Beach,” a virtual, live-streamed party that will air live on TikTok and www.ShaqVsGronk.com at 8 p.m. ET.