: We think were gonna be SICK. Look what TMZ is reporting:
Kevin Clash -- known as the voice of Elmo -- is facing NEW allegations that he had a sexual relationship with a SECOND underage boy ... TMZ has learned.
The man -- who is now in his 30s -- has filed a lawsuit against Clash ... claiming the two met on a gay phone chat line back in 1993 ... when the accuser was 15 years old and Clash was 32.
The accuser claims, "[Clash] trolled gay telephone chat line rooms to meet and have sex with underage boys."
In the lawsuit, filed in federal court in NYC, the accuser claims Clash "groomed [the accuser] to gain his trust by, among other things, taking him to nice dinners and giving him money."
The accuser claims while Clash was featured on "Sesame Street," he was "preying on teenage boys to satisfy his depraved sexual interests."