Gene Simmons is known for his abnormally long tongue, and yes it's 100% real. It became a trademark for the band KISS and rumors even started around it being an implanted cow tongue.
KISS is known for their leather studded costumes and eccentric face makeup, as well as their 14 platinum albums. They took the world by storm in the 70s and played under an alias for many years. In 1983, they decided to go unmasked and perform without makeup or costumes to their fans' surprise. Being one of the most influential hair metal and rock and roll bands of all time, their shows have a reputation for wild stage antics and gothic theatrical themes. KISS toured for over 40 years, so you could say they probably did rock and roll all night and party every day.