CONTRIBUTED PHOTOImpractical Jokers, 7:30 p.m. Aug. 28, Fairgrounds Grandstand, Allentown Fair. “Impractical Jokers,” a hidden camera reality series that premiered on truTV in 2011 in its eighth season, stars The Tenderloins, an improvisational comedy and sketch comedy troupe. Joseph “Joe” Gatto, James “Murr” Murray, Brian “Q” Quinn and Salvatore “Sal” Vulcano pull pranks while being filmed by