WHICH CAME FIRST THE CHICKEN OR THE EGG? Aspiring magicians are invited to perform their best trick to try and fool the world-famous team of Penn & Teller, who will get to see the trick only once and have to immediately try to work it out.  Anyone who succeeds wins the right to perform with Penn & Teller in their celebrated show at the Rio Hotel & Casino in Las Vegas.  The live studio audience and the TV audience watch along with Penn & Teller as they try to figure out the secrets.  The magicians featured in the episode include Seth Grabel, Patrick Folkerts, Migz and Emily Victoria.  Alyson Hannigan (“How I Met Your Mother”) serves as host (#508). Original airdate: Monday, July 23, 2018