Testoobies Share definition Flag When ones boobies are old, wrinkly and saggy. Thus resembling testicles. Dude 1: "She was hot from behind but when she turned around she had a serious case of testoobies!"Dude 2: "Boner killer....." Testoobies by dnmmaui November 25, 2011 Get the Testoobies mug.