Fox News correspondent Rick Leventhal was roasted at the Gotham Comedy Club for his 50th birthday — but it was his mustachioed colleague, Geraldo Rivera, who felt the bristle of many jokes. A spy told us, “Three separate people pointed at Geraldo and commented how cryogenics really do work.” Guests included Leventhal’s girlfriend, Lauren Sivan, Shepard Smith, “Fox & Friends” weekend host Alisyn Camerota and comedian Colin Quinn.