A PLUMBER reeled in agony as his stomach ruptured — and the embryonic remains of his TWIN spilled out.
The lumpy mass forced its way out after lying inside Gavin Hyatt's abdomen since he was born 30 years ago.
In a scene echoing the horror movie Alien, Gavin staggered into his GP's surgery bleeding from his belly button.
His stunned GP Dr Joe Santos said: "It was like something from Alien. I didn't believe Gavin when he said something was coming out of his belly button until I saw him."