rule 34 after transformation anus backsack balls big balls black goo black penis blue goo blue horn dragon feral firondraak forked tongue genitals glowing glowing eyes glowing markings glowing mouth goo creature goo transformation grey background horn imaginarydragon male markings melting membrane anatomy membranous wings merging neltruin penis perineum purple precum purple saliva red eyes simple background solo tail takeover tongue transformation white goo wings 3845758