What came first the chicken or the Tenga egg? It’ll be you when you get your hands on the Tenga Egg. A new kind of masturbation aid, the masturbator sleeve from Tenga will stretch to fit any size and has a wavy pattern inside so you can ride the waves of ecstasy. Crack open the Tenga egg to find a silicone masturbator and sachet of lubricant inside. The sleeve has a rounded end to completely cover the penis.